There is no such thing as a beginners razor or a beginners brush. Its all a matter of what you like. best bet is buy a quality razor, hollow ground either 5/8s or 6/8s. What is a quality razor? Thats a tall question. Probably one not made in pakistan or India and with few exceptions China. As far as a brush goes get a med sized best badger.

Thats very general advice. maybe someone else will come along with something more specific for you.