Can I make user role that can only access a certian content type?

I would like make a custom role that can only access a custom content type that I’m going to be creating in the admin. Is that possible and does any know of any examples or tutorias that I should check out to get started?

Thanks,
Paul

The register_post_type has a capabilities (or simple version: capability_type) that you can use to specify a separate capability to create and edit posts of this type. If you set this, you can create a new role that has the capability to edit these custom posts, but not regular posts.