Discovery (Bantham), Nick Thorne (Woolacombe), Sarah Something(Saunton), ND Surf School (Northam.Westward Ho!) should all be able to point you in the right direction. Alternatively, just hire a board and throw yourself in the ocean. Then it's just a few months of frustration.
As a request, please learn the rules of surfing. Also, when someone is surfing towards you, please don't just stand and gawp at them. Instead, paddle forward over the wave and out of their way.
Have fun.