Horse training for beginners?

I'm a new horse owner, I have 3 horses and 1 paint pony cross, I am wanting to get into natural horsemanship and I was wanting to know what is the best way to start? I know there is probably thousands of ways to do this and most of y'all are going to say I need to get a trainer, but money is tight for my family. So sadly as of right now that is out of the question. I'm going to try my best to train them myself. Thanks for any help you can give =)