What are some other good ways to search among the unstructured unknown that is out there?
The word "search" implies you are looking for something specific. It doesn't sound like you are though. You're trying to learn what exists. What you want to do is "explore".
You explore by going beyond the things and places you know and experience them. You see things first hand you haven't seen before with your eyes, you hear things you haven't heard before with your ears. You communicate with others that have also explored and learn second hand. You then take the things you've learned and cross reference them with your own prior existing knowledge. You can project and extrapolate what else may exist. Then you go there and see if it does. Try things. Make mistakes. Learn from them. Try something else. Rinse. Repeat.
When people say "get out and live life" this is what they're talking about.
You can tell by the way that it is.