You can't train a horse from a book if you have no idea what you're doing. Chooring the right bit depends on the horse and not on a book that says what bit is good and what bit is bad. one of the most basic bits would be a regular snaffle but if you want to go softer I would go for a french link, a Dr. Bristol or even one with 3 joints. They don't have the nut cracker effect like a regular snaffle does.
As for the saddle part have you already sacked him out? before you begin anything though get a trainer of which you like the methods he/she uses to stand next to you and give you a few pointer. It doesn't have to be a great trainer but just one that has trained horses for a couple years and uses good methods. It would be a good idea if you watch him/her work a couple horses.
Start with sacking out until the horse stands calmly. some will even rest a hind leg. Put the pad on their back and then take a long rope. put it around where the girth would go and gently tighten to until you get a sigh, chewing or the head goes down. While brushing the horse set the saddle down next to them. Do this for a few weeks until the stop snorting and just relax. You want the horse to give in on it's own instead of you forcing it. Stroke the horse with the saddle and gently slide it on their back. If they look uncomfortable stop and just rest the saddle against them. if they move away you move with them. Once the saddle is on th proper spot wiggle it around a little. The horse should stand quietly Reach under to grab the girth and slowely start tightening. wait for the sigh before you secure it. you want the horse to feel safe. Tighten the loosen and repeat a couple times. then let the horse go. Don't chase him but let him figure it out on his own time.
Remember that traning doesn't go on human time but on horsey time. Some take longer and others will have a saddle on right away and stare at you as if bored.
This is hard to learn from books because they are written not for problem horses but for the ones that go perfectly.
Sorry it's so long! PM me if you have any questions!
PS. I didn't get this straight from a book. Ihave watched numerous videos read almost every horse training book and came out to watch trainers work their own horses.
BEFORE YOU BEGIN GET A NOLEGABLE TRAINER WATCHING YOU!! AND ALWAYS WEAR A HELMET EVeN IF YOU ARE ON THE GROUND... if the horse explodes they'll probably send a well aimed kick at your head!