Tip: Create member groups first
Jason Morehead offers up a good process tip when starting a new EE website. He suggests you first set up your member groups:
Several aspects of EE, such as weblog category groups, statuses, and file upload directories, have assignments for member groups. (For example, you can determine if a particular member group has access to add/edit/delete categories for a specific group).
Read Jason’s entire Tip: Create member groups first.