We're talking about the service manual that licensed repair shops use as a reference for your car, not the tiny owner's manual that's sitting in a small binder in your glove box, that you probably haven't looked at since you bought the car. You can get this from your local dealer, or online. Sometimes you can find a good deal on a used copy on eBay and save yourself a few bucks. Then, next time your car is due for some routine maintenance like an oil change, look up the procedure in the service manual, gather the necessary tools and supplies, and try to do it yourself. Give yourself time to screw up, because you probably won't get everything absolutely perfect the first time you do it. That's OK. You aren't the first guy to have to bleed your brake lines twice. The absolute best way to learn is by getting down and dirty and hands-on with your car.