Plan, plan, plan!
Think about what morphs you are interested in breeding and what you want in the future.
I second the statement about getting females. If you have the money you can buy females as adults but it will cost you. Just be careful about buying from small breeders, some people will lie about snakes being het for something and also they may sell adults that just wont breed. If you trust them then most likely they are straight forward honest people but just keep an eye out. If it seems like too good of a deal it probably is. Your better off getting your first snakes or hets from reputatuable breeders such as pro exotics, N.E.R.D, BHB Enterprises, etc. are all great guys to work with and are some of the most popular BP sellers on the market. Depending on how many snakes your wanting to breed I would suggest a whole snake room with a rack system and such. Depends on what your thinking about spending. Its NOT cheap.
Good luck with your future interest in breeding and welcome to the forums