I usually set a maximum price for each coin that I have. And as long as I don't need cash, I keep these tokens until the reach that maximum price. But sometimes i sell some my tokens early when i start not trust that token anymore.

Yes, it is going to go together. Learning is always a dream of earning money, so I also try to follow and grasp the trend and constantly learning advanced knowledge.

Bounties is the best and the most comfortable way to earn crypto currencies. You can also exchange the tokens into your favourite altcoin after you get the tokens. Just spend some time by investigating the bounty programmes and try to avoid getting scammed.

I see that too many sell lower because they hope to buy cheaper. however, this is not always justified. and many lose a significant part of their funds.

as for my opinion the best and comfortable exchanges is Binance, kukoin and better to trade on exchanges which have big volume of trading

I think we are at the bottom now) Price for Ethereum has already reached 124$! Will be even lower ?)

Vitalik has announced a delay about Constantinapole. He said it will be done in January, 2019. You can look at his twitter page or follow Ethereum community.