you have to sell when you speculate there will be a dump (red) in the future and sell before it happens. that is called being a good or experienced trader. of course it is not always possible to predict these things specially not much ahead of time but you have to be able to do it most of the times.
those other times when you can't predict them you have to act fast by selling your altcoins before it gets too late. by doing that you protect your investment and then buy back at the bottom if you like.
this requires watching the price, looking at charts, even have alerts and also listen to the news.

that was not "the fork". what happened was that they set their starting point that day. think of it as the snapshot they took to later build on top of it. when they are going to start doing that is not yet clear. i believe i read somewhere it will be in November but can't find much else since the project is not yet complete.

there is also 16000 blocks to be premined so there is that to wait for also.

no it  doesn't mean that.
it just means BTG developers were not capable of setting proper dates and communicate them with the community properly. there will eventually be a working blockchain.

there has been no ICO.
and the developes won't get shit unless they release the coin, premine that 16000 blocks and then wait for the locktime to be reached so that they are capable of dumping some part of it and then wait some more for the next locktime to be reached to be able to dump more and so on.

in altcoin world nobody cares about these things, not the ICO, not the premine, not the scan, not who is behind what,... if they did ETH wouldn't have become big with its big ICO and the 72 million premine coins and all the bugs and hacks and the scams....

1. (most important step) wait for the BTG fork to happen! it has not yet happened, it will probably be in November. you can follow their website BTCGPU.org or their twitter or github (both links on website) to get the updates.
2. in your wallet account on blockchain.info go to settings and find where your "recovery phrase" is located at
2.2. create a new blockchain.info account or use another wallet and send all your bitcoins to that new wallet.
3. use that in here: iancoleman.github.io/bip39/ to get all your private keys (use an offline copy of that page). there is an option called blockchain.info if you look for it. there are also walkthroughs online which you can find if you search.
4. import those private keys in BTG wallet that you download from btcgpu.org in the future and have your BTG.

calling bitcoin a "bubble" is not at all a new thing. it has been happening for year by the same people! according to them bitcoin has been in a bubble for as long as it existed. in other words it doesn't matter what the price is, it can even drop down to $1 today and they will still call it a bubble and predict its failure some more.

and things that Warren Buffett says about bitcoin is mostly because his world is being threatened by this decentralized digital cash that he neither understands nor can control. and that scares the hell out of him.

the fork itself has not yet happened my friend so i think we can not really call it "fail". it is a shitcoin without a doubt though but that is only because it has a big premine and also because it is using bitcoin's name just to take advantage of bitcoin's popularity.

the price is staying at a nice level in my opinion but that is partly because the fork has not yet happened so there is no chain to send your coins on and dump them, the dump so far was dump of IOUs that exchanges gave their users. but it is also low because GPU miners have not yet started on it. it may cause some hype and pump eventually like it did with Ethereum.

i have no idea what this word means or where you are taking it from but "bitcoin" itself is not hack-able. the way private keys are (a random number in an unbelievably huge range), and how the hashing to get the public keys and bitcoin address (ECDSA and SHA256 which are irreversible) makes it un-hack-able!

your wallet is hack-able though. if you are not careful, use a weak password or have a compromised machine that you use for your wallet.

ps. more than 8 years of being around and not being hacked even once should answer your question though!

meh...
they never banned crypto, they never banned bitcoin, they never banned trading, they never even banned exchanges.
what they did was only two things:
- banned ICOs which we all know are fraudulent.
- closed the biggest exchanges which were working illegally and failed to comply with the regulation rules.

besides, price never relied on China in first place! they were, as they still are, a considerable force in the market but they are one of many. and that is because Chinese are good traders.

your warning needs an even bigger warning itself!

these days almost everyone knows this but since OP neglected it, i should mention that keeping your coins on an exchange in not at all a good idea. there has been too many cases of them running away and becoming scams. and there has been even more cases of them closing their users' accounts. recently bittrex did that for a lot of their users from different countries forcing them to verify their accounts and rejecting some even when they did that!

not to mention that in case of no replay protection that OP calls "repeated transactions", the exchanges not only won't support it but also they may lose their funds.

this all means if you hold anything on exchanges you are taking even a bigger risk.

don't compare SegWit with the rest of them. SegWit had a big support from everyone so it was a good fork that nearly everyone agreed to and that is how the forks of a decentralized bitcoin should be.

the rest of them, like bitcoin cash, have never been like it though. it had a very small amount of supporters who didn't really care for bitcoin or much else for that matter they wanted money and control. and they got only the money, some of it at least.

and the other forks like bitcoin gold and possibly a lot more like it in the future will be useless altcoins that want some piece of bitcoin only. you can see it by their premine!

this is the first time i hear this rumor so my assumption is that you are the source of this rumor!

and this so called "rumor" is easily dismissed.
a simple comparison between the two projects can tell you that the bitcoin gold project is not even half way as good or interesting as bitcoin project which is created by Satoshi Nakamoto. so how can anyone believe that the same person creates a second project with 0 development.

 you know that BTG is not really creating anything. the use of alternative mining algo for bitcoin like equihash has been around and there are actually other forks like this just out there never active.

when did bitcoin split before to now split "again"?!!

in any case that was a clear altcoin creation and the future of it is just like other altcoins, specifically since this coin has a rather large amount of premined coins which many investors are unhappy about. of course there are still things that are unclear about this project, there is even an open PR suggesting the removal of the premined coins.

but in the end the mineability of this coin is somewhat interesting, so i wouldn't put this aside just yet. it may show some potential in the future just like how ETH did in the past.

if you think a bubble is going to burst when price drops >90% then you think wrong and it will never happen. but if you are familiar with the notion of a bubble and know what it really means then you know that a bubble burst can mean a simple 10-20% drop and since that has already happened multiple times you can call those as bubble bursts if you like.

i would prefer to call them corrections though. the bubble is really not a valid economical term in my opinion. they don't even have a proper definition for it!

yes it is possible to ban it. but nobody can take control of it, they can take the hashpower and use it themselves but what would be the point of it? that would be robbing people blind in broad daylight! i don't think their government is that bad...

even if they kill mining in China the impact will be a big drop in hashrate and consequently a big delay in finding new blocks but that would be fixed in no time when the difficulty adjustment is reached and things will go back to normal again.

there are a lot of different countries that are currently setting new rules for cryptocurrencies in general. it is only a natural thing to do when the market is growing this big and this fast. they all used to only give warnings but now that bitcoin most of all is being adopted more, consequently they will be issuing more regulatory rules for it also.

you don't have to worry about these things though. regulations are mostly a good thing for cryptocurrency world and they actually have been in most cases so far. they can help the adoption a lot.

1 bitcoin is still worth the same 1 bitcoin as it always is and currently is worth $5713 according to bitstamp.

if you want to count the "airdrops" and giveaways they you have to consider all of the altcoins that have done it so far. and you you missed at least two of them that i know of:
Bitcore (+$6.92) i forgot when they started. probably in April
Byteball (+$184) last moon, and again in a week or so.
Stellar (+$0.03) did it a couple of months ago.

there are probably more.

well what did you expect? after any price rise (even if you ignore BTG fork) there must be a correction and the drop was less than 10% which is already over and price of bitcoin has recovered back up again. and that is the natural movement of bitcoin for as long as it was listed on exchanges and has been traded.

as for ETH, again what did you expect? after a lot of dumps and a large amount of price loss, it should recover some of it back. that is why trading exists. you buy at the bottom after a severe dump and sell after the reversal happened and before the dump continues.

true, and i have been waiting for decentralized exchanges to become more popular and more used for over a year now. but sadly i have not yet seen them pick up and become as popular as the current centralized exchanges like poloniex and bittrex despite these centralized exchanges being extremely bad and highly risky to use.

i wish the link you shared here reviewed these exchanges more than just listing them with a couple of lines but it is still a good list and i have not even heard the names of most of them. so thanks for sharing it.

any altcoin that "gives away free coins" has the same fate without exception:
- some people sell immediately after they receive their free coins
- some wait and dump at the best price
these two groups determine initial price of the coin. but after the dumping is done and everyone was out of free coins the real price starts showing up and it becomes stable and that is when the pumpers start their work on it.

for bitcoin gold the first step is nearly done and price is around 0.075BTC-0.095BTC after all the dumps.

but there is a second step because the blockchain and mining is not ready yet and so far the dump was from traders who help their coins on exchanges which are a great part of the total anyways. so the worst dump is nearly behind us if you ask me.

not really, traders only keep the funds they want to trade with on exchanges. newbies who don't know what trading is are keeping more amounts on exchanges.

and most people don't trade with all they have. most of them have some funds in cold storage and only trade with smaller portion of those funds and that is kept on exchanges and only for as long as they are trading with them. if a trader stops trading for any reason like price being stable, they withdraw their bitcoin immediately back to cold storage.

as for cold storage cost, you should know that cold storage is not only hardware wallets but hardware wallets are only a sub category of cold storage. if you don't want to spend money they use paper wallet.

right now bitcoin gold is like a promise of something to happen in the future and nothing more. if the developer decides that it is too much work to actually create this coin, it will no longer exist because it has not yet started! the code is not even complete yet

the other user said 25-30 days as an estimation of when they may complete the code. i have heard many different dates actually. someone even said it will start in 1 November which is in about 7 days.