There is no specific time for this only time can tell , the most important thing is that many people are into Cryptocurrency right now !

I cant really say what is the best exchange to buy bitcoin because it depends on your country try to check out coinbase and cex.io

That is right its up to you if you want to participate ! But i think you are doing reviews for all without doing proper research you always seek for ICO that promise ypu that they will pay you so dont blame the entire bounties because we bounty hunters know the risk if the Project is a complete failed

Buying at lows is the best but if you have doubts but at several lows not all at once to lesser the risk of too much dump and specially learn to do cut - loss

Based on my observation holding bitcoin is not good many people are manipulating this coin much better to invest to newly born altcoins specially utility tokens

I have read several articles about this China banned Crypto but they are thinking to regulate it instead of banning the whole crypto

Cryptocurrency is interesting thats why people says its the new generation of internet thats why only people who puts money will get rich like bitcoin but as a newbie i will continue my research before investing so i will know the risk involve !