Definately get some litature on breaking and ground training!
That is the first and foremost important thing. I love seeing people who commit to self accomplishments of training and breaking! I have nothing against commercial trainers as they are important, but if you are confident and determined to do it yourself, and are realistic about it.. It is a good option!
The ground work is the most important key! You have to establish good bounderies and methods in training. Training your horse on each step of the process to saddle work is super important, to provide a "sound" riding horse later on! Get some litature on it! Once you have worked with your horse on the ground work, and its time for stepping up to saddle work..
A key I use.. Start doing more ground work with the saddle in your work area. The more your horse sees and smells the saddle, the better it will be and get your horse over being afraid. Let the horse check out the saddle several times before trying to mount it on his/her back. I will use a saddle in the round pen on the ground for 3-4 weeks prior to mounting it on mine. We work on our ground techniques with it there, and check it out each day.
Start with your saddle pad first to go on! Let him/her sniff it, introduce it, start rubbing in on their legs, back, face, head.. all over! Slap it several times in a rythem on them, and their back. They will desensatize to the pad, which will help with throwing the saddle. Be consistant! Take your time with each step.. The horse will appreciate it much more and be a lot more willing!
Dixon's Red Hot Ember