I would suggest having a trainer give you training lessons, as a coach.
But here are some tips: From lunging, you will have to go to ground driving in a halter, then in a bridle. Also, with just a halter and lead, teach the horse cues like backing, side pass, haunch and forehand turns. I always start by poking them behind where the cinch would be and hold the lead pretty tight, they should eventually move away from the annoying pressure by moving their hindquarters in the other direction.
Please, know what you're doing when you go to first bridle a horse! The mouth is a very sensitive thing. Also be careful because a horse may go over backwards when you first put pressure on the bit!
Then once they have the ground driving down at a walk/trot, then you can ground drive them with a saddle on (which you can start saddle "breaking" a horse at any time by getting them to let you put it on to them. You should have already lunged in a saddle at this point.)
The sacking out -- never forget that!
Then flop those saddle stirrups around on each side of your horse, let them take a step away if they must. Pat the seat of the saddle. Do half jumps by the horse. Do half jumps by the horse while patting the saddle seat. Put your toe in the stirrup and do half jumps. Stand with one foot in the stirrup while grabbing the saddle. Work your way into the saddle.
Training is a big thing that can ruin your horse if you don't know what you're doing. I would definitely reccomend getting a trainer to help coach you, (usually for the price of riding lessons) and read alll of the books you can on horses, horse sense, and training.