It depends on if you are investing or trading, just like stocks.
Stocks have fundamentals, crypto has what are known as 'token metrics'. You can Google it for a greater understanding, but it involves similar factors as a stocks 'metrics' (market cap, outstanding shares/tokens, etc.)
There are some great, solid long term blockchain and crypto projects and there are plenty pump and dumps, just like stocks but with a much higher volatility.
Now to answer your question on a personal level: I pay people who eat, live and breathe crypto and follow their calls most of the time. I have services for investing and also a group that sends out trade signals for the more 'pump and dump'-y type trading plays I like to use to fund my long term investments.