I don't know which others, when i come first I look at coinmarket cap and learning a detil the coin I want to buy.
My friend ask me, what coin he should buy , but I not really sure for now because I'm entering cryptocurrency 3 years ago. Too many coin right now that make me confusing
That will be a twist and I think you have to tell your friend to he needs more time to check the market and create analysis as investing never works if that he never knows. In general, he needs to understand the market so well and choose the coins that are profitable, not those projects that have no use-case. It really takes some time to understand but we should have to as this is the way we could save ourselves from scammers.