I'm buying my first Mac in a week or two, but before I do I want to make sure it can do what I need. I'm a law student, and I currently have two accounts on my laptop: one with no restrictions, and one which I use when doing research or writing. My school account has access to most of the same files as my main account, blocks access to certain file directories (full of ebooks, movies, & other distractions) and blocks certain specific websites (where I can spend too much time reading or posting). It allows access to any website except the ones I specifically list. Is it possible to set up a Mac to do this?