Markpress Multisite (user shops)

How can I limit more stuff on my user shops and make it more user friendly.

Side bar, I want to take off 'post', 'users' (as I will have one user shops for every different user), How can I make it so they can upload a user picture, limit settings/themes to just one shop style that they can have.

top menu, the wordpress area, site area and access to both stores shouldn't be there.

I'm new to this. I'm trying to make the user sites easier to edit. please help.