Hey. I have a band of trusty people I follow on YouTube and Twitter, plus I'm a member of a private Telegram group of crypto geniuses, so when they all comment on an ICO or a coin I take note and do some digging for myself. If I like what I see then I'll invest appropriately. So you really don't need to do much up front to get them on your radar, then it's up to you. Of course if you want to get in at pre-sale then you need to keep your ear to the ground much earlier on and get in before it gets picked up by the Twitterati.
Hope that helps!