Another thing I would also recommend is paying attention to media.
Reason I say this is because:
- feedback is important whether positive or negative
- critical reviews by professionals
- using certain things such as telegram, Facebook, Twitter and various other tools play an important roll on how a project is coming along.
Afterwards comes down to your own judgement whether you want to invest or not.
Check out the market situations on daily bases that help to contribute to your decision making ability and thus you decide and choose one site rather taking decision without any confirmation from the market value graph will directly lead you towards loss.
After monitoring the market you are going to take the decisions of buying more these days and selling at the high price for gaining extra profit is called productivity.