> how would you try to search for something if you are not aware of it's existence?

You're asking a leading question. The verb you're using here is one specifically indicating interaction with a "platform" (a digital aggregation of information). The answer is you don't search anything, you completely change your epistemic and interaction model. Instead you build a social web of people who have their own social webs, and you share things you've made and things that have been shared with you. This is your "platform".