You will have to analyse the market condition in order to know what to do next. For example if the market is bearish then find a potential coin and wait for it to dip. Buy it at a lower price and then hold it until the price  eventually rises. Find a significant higher selling point and then sell it.
Repeat the same with many other coins . The market will keep on going up and down and so you will have to be determined in order to take out the profits.

If you look at it this way then you should say that the era of Investors has come to an end too. Most of the investors have been investing in potential projects in early stages and making money but now since 80% of the ICOs are scamming people most of the Investors are loosing their money.
It doesn't work this way now buddy. In order for an investor or a bounty hunter to make money he has to first find a potential ICO which is a tough task and then take part in it to achieve his goal.

Guess what, I just did. ETH is at $230 right now and this could be the best time ever to buy some ether .
There are two types of people who invest in cryptocurrencies. One are those called as "Investors" who don't care much of the price and invest in the coin just because they see it's potential. Second are those called as "Trader" and they look at price and invest in it based on analysis and trade for profits.
We must have the knowledge of both of these things to invest in crypto the wise way 

Not only confidence and patience but also many other things are required for a trader to achieve his goals.
He must have the skills and knowledge to pertain his goals. He must be able to plan and strategise and then trade accordingly.
He should be determined in order to carry out the trades effectively and hence not be a part of FUD, FOMO, pump and dump etc..

May be what is you said is true but it's not necessary for it to happen. Things can go the other way too.
There would surely be people who will still be willing to mine BTC despite the high mining difficulty.
The profit might be less but still it won't effect much to the bigger players out there with huge mining rigs.
What if the algorithm is changed from proof of work to something better ? I highly doubt this though.
But the point is that there numerous possibilities out there and hence making such vague predictions would make you look like spreading FUD.

It depends on what type of mode BTC is used. If BTC is used as an asset then it would be better if the price keeps on going higher and higher.
If bitcoin is treated as a mode of payment then it would be best if it's price becomes stable so that it is used in a wide variety of places.
To combine both of these BTC should go to higher prices periodically and stay stable for a period time of time which is almost difficult to happen.
To satisfy both of these situations BTC has to split and doing so would destroy BTC. Keeping Satoshi's view in vision it is known that he created bitcoin for making a new mode of financial transactions. Hence BTC becoming stable would be best for itself.

Just googling around won't do you any good until you try it out yourself. Since you have already tried and lost a few coins, the best thing to do for now would be take a short break and follow the big traders. Check out some videos on Youtube which will give you a better idea of how to analyze the market.
Learn how to understand the charts/graphs and analyse the market and based on that strategise your trade and then execute it.

The current situation tells me that BTC will be increasing slowly and by the end of this month it might be able to cross the $8000 threshold.
BTC has been below $7500 from the past few months and once it crosses $8000 then the next target will be $10k. BTC will hold a good support at $8k.
If things go well BTC might cross $10k by the end of November and this might also lead to a bull run. We can't expect how high the price might go if the the bull run starts.

The price is increasing day by day as the ETF dates are coming near. It happened the previous time too. As the ETF dates were coming near the price slowly started rising albeit it again went down when the result was negative. Positive news in the market is driving the price of BTC upwards and I believe that if things keep going this way then by the end of September we might see BTC crossing $8500 and by the end of the year the price might cross $10k - $12k .

Another good news for BTC and cryptocurrencies. It's always good to hear such news in the market. This is the second good news I am hearing for crypto today. The first one was the ETF related news that said clear headerd responses to ETF rejections are driving the BTC price upwards.
Bitcoin has increased in price and is at the highest from the past few days. Things are changing and this might lead to a bull run soon.

Even if Bitcoin or cryptocurrency in general doesn't go mainstream, it still will be implemented in few industries/platforms . Cryptocurrency trading will never stop because cryptocurrencies are a great way for a government to tax the people, track the black money etc... If cryptocurrencies are banned the governments will never be able to track any black money in the market. So I believe both the fiat and crypto will walk side by side in the future.

Very true. Ether is at a very low price right now since the $ price of it has fallen down since BTC has gone down and the BTC price of ETH has also gone down which has tremendously decreased the overall price of ether. Exchanging BTC to ETH would be a wise option now since ether is down and if the price rises then the overall % gain will be much higher in ETH than in BTC. Keeping a smaller portion in BTC exchange the rest for ETH.

I am really surprised to see so many replies within the last 24 hours. Almost all the people are in support of ETH and agree that it is at a very low price as of now. There are some who predict that ETH will further go lower than this. I highly doubt this since it is having a great support at $275 and while waiting for it to go low you might miss the opportunity to buy it at such price and if the market goes bullish you will miss this entry point. It won't stop rising once it starts.

You will have to sacrifice something in order to gain something. If you want money urgently to bare your daily expense or whatever it is then you must sell your tokens at whatever price it is. If you have the time to wait patiently and sell when the price is high then that would be the best thing to do albeit no guarantees that the price would increase. Depends on you now, if the situation is worse then you should probably just sell the tokens. If not then wait until the price recovers and then sell at a higher price.

You missed the most important part which is Pump and Dump. Most of the beginner traders want to get rich quick.
This is the first mistake they do thinking that Crypto is a get rich quick scheme. They indulge with a few pump and dump people/groups and then invest their money blindly into some coins which they don't even know or have read their project. The newbies face big losses when the coins price gets dumped instantly. Beginners should avoid pump and dumps as they most of the time results in losses.

This is not possible until and unless you or any person who has access to the private key of your address makes a transaction.
The transaction could be ETH transaction or an ERC20 token transaction. Paste your ETH address in an ETH chain explorer and find out if the transaction details. If you have done a token transfer then the gas amount would be used from your ether wallet an hence the ETH would have been decreased.

P.S : You should have posted your eth address so that we could verify what the problem was

There is nobody who can stop a coin from being dumped. It depends on the strategy that you plan and execute which can decrease the impact of a coin being dumped. Most of the ICOs launch bounties and airdrops and lots of people take part in it. If too many coin are allocated to bounties and airdrops and all the coins are given to the participants at once then it is a sure thing the price will go down since all of them will dump it. The best way I see to prevent it is allocate a smaller portion to bounties and then give coins little by little so that the dump is not huge.

Knowing that we all suffered through this bearish trend and now that we expect it's almost over it is the right time to buy ETH !
ether is at a very low price for now since it is stable at a price of $275-$300. It was about $800 3-4 months back and it might recover the price soon.
Considering it's ATH this must be a great price to buy some ether as it will return some good gains.

The price of a coin never keeps going in the same direction for a long term. So do not worry mate. BTC will not completely drown in the long run.
It's the short term that most people look into. Yes BTC has been falling since the beginning of the year but do notice that there a little spikes every now and then. Also, BTC has increases damn a lot from the beginning of 2010 and we can never expect how far the price will go in the next few years.
Just hold on to your coins tight so that you don't have to regret in the future.

$10,000 is an achievable target for BTC in my opinion but not $25k . All those who say BTC can/will cross $20k by the end of the year are probably making statements in the thin air. According to me albeit $10k is a tough target I beleieve BTC can still accomplish the target. It has already crossed $7k which it has already crossed many times this year .I beleieve once September ends we might see a boost in BTC's price as history shows us that the price increases during the months of September - November.