The built in solution is Zen reports or has that changed? Otherwise, as people mention, lots of other options.
Certifications & Credly badges:
Michael has no Certifications & Credly badges yet.
Global Masters badges:
Michael has no Global Masters badges yet.
Followers:
Michael has no followers yet.
Following:
Michael has not followed anybody yet.
Maybe my VS Code setup isn't correct, but if I need to explore % class files to learn more about behavior of some methods (let's face it, the documentation isn't always revealing), I use Studio. A recent example was learning what methods of %CSP.Page I could override and which order the override-ed methods were called in the code.
I know in the past I've referenced other things. It's not often but it's helpful when we can. I haven't found a way to view % classes in VS Code.
Maybe someone can help me if that's something I've missed!