You can lock down forums to were they’re un searchable unless you have a login. Tons of forums are like this.

You don’t…you go back to forums. They’re searchable. Discord and Facebook and well anything self hosted isnt via search engines

They can be side hustles when you first start out. It’s a lot of doing what the seasoned techs tell you to do, but you will learn on the job. Pay isn’t bad either and we desperately need more people in the trades.