Hey Loose,
look up Robert Clarke Marijuana botany.
If done right your looking at a two year project mininum. Its a long process if done right. Very rewarding at the end. If it turns out.
May I suggest crossing some of your favorite strains first. If and when you get a cross that is special then back cross it to the original and try to stabilize your cross. Then take the leap to try to breed your own strain.
If your intent on creating your own strain you need truebreeding, IBL or landrace strains to start with.
Hope this helps
Tri