Questions are always welcome.
The number beside name is your reputation. It matters and it also does not matter.
Check this sit out that should answer a lot of your questions.
---> https://hivelibrarian.herokuapp.com/

Check out https://3speak.tv/ for video uploads linking to hive posts.
Each front end is a filter and aggregate of what that community is about. The filters are/can be the focus and tags of that community. Try to keep to what each community focus is when posting.
You can buy hive, earn it, or trade for it.
Hive account@scottcbusiness posts and this one specifically should give you a leg up