You can go every day or every hour if you like. Each meeting is different, most folks go ti a few different ones and think of one of them as their home group. In early recovery looking for ‘open’ meetings (anyone can attend) and Discussion groups (more stories less focus on the 12 step Big book).

Maybe find a sponsor, don’t worry about judgment - everyone there is past that already.

Don’t get stuck on the higher power concept if you are not spiritual. Think of it as the thing that is driving you to find sobriety.