Using this theme: http://themeforest.net/item/fast-blog/145138
Can I have users sign up to contribute to the site and see the Tumblog options on the dashboard but have them be blocked from seeing other Admin panels?
Marko Nikolic answers:
as first select option that allows users to register in Settings area.
You can install this plugin:
(you don't need this plugin, but can give you more options then classic WP register)
After that install:
and manage what users can see, depending on their roles.
Joe Jenkins answers:
You could use this plugin:
Not only will it allow you to state what areas your users hae access to, but it will allow you to do much more too, such as branding your site.