What a group session teaches that solo work can't

Building alone teaches you your own project, and only your own project. Sitting in a group with people working on entirely different ideas exposes you to problems, tools, and small fixes you'd never stumble onto by yourself, simply because your own project would never create that exact situation.

I've sat in sessions like this myself and walked away with an answer to a problem I didn't even know I had yet. Even just listening to someone else's question can teach you something useful, because half the time you didn't know that particular problem was even possible until you heard it described. That kind of exposure is hard to get any other way.

Try this today: find a group setting where people are learning the same kind of tool you are, even a casual one, and just show up and listen for a while before you ask your own question. Pay attention to the kinds of problems other people run into. You'll walk away with more than you expected.