Figured its about time I know the 'basics'

What do these things mean/do in my profile, and what changes them:
Position: Jr. Member
Reputation: 145
Activity: 6.6%
Also Contributions, Awards, Reputation (a separate one it seems), and any similar stuff.
What do we have access to after restricted is lifted? Or more specifically where? I know is scripts and I'm pretty sure I've seen it all but I want to make sure there's nothing I've missed

I'd also like to make two requests since I'm one of the smarted and most popular members of the board and have seniority. There may be more demands coming but I can only think of two atm. *ends sarcasm and switches to polite voice*
Can we add a Private Bugs section like AskChopper did? All of our boards are public and I have tons of bugs I'd like to test and discuss but I don't want them available for everyone to read.. I feel I need to do all that through private one-on-one communications and thus lose the benefit of team efforts, collaborations and large information sharing, teams of many minds working together yadda yadda yadda
Also, I'd really like the ability to 'like' a post

A lot deserve it, but don't necessarily deserve/require and reply.