I agree w jayknee, bellota rasps are really good. And like others have said, it will most likely take you a while to build up to using nippers. Just make sure you get long
handled nippers when you do get them. And, you will need a pair of gloves, a good sharp rasp will bite you! I don't know what brand my knife is, but just buy quality. My first knife was poopy - and the price reflected it (it was like $15 or something). I thought, "its a blade and a handle, a $15 one should get it". So much for thinking.
I also got a hoofjack brand hoof jack. I don't really use it that much. I wish I had gotten a different one w a smaller footprint. Its a great idea, but it is cumbersome. You might see if you can borrow one before you buy one. They do make it a bit easier.
I am sure you already have a cell phone. Taking pictures of each hoof and your work helps (it helped me, anyway).
Somewhat like pfb, I had filed out chips and such on my own horses, but I had always had a farrier trim or shoe them (back when I had them shod).
My farrier had me start on her horse. I was just to hesitant and afraid I would do some irreparable damage to even get started. She also checked my work on my mare as I first muttled along. That really helped me. If you can have a competent farrier work with you, it really helps. If you cannot do so right away, I wouldn't let that stop me from starting. Your initial efforts will really be getting to where you can maneuvering the rasp w ease, and will probably go rather slow.
It is also a good idea to decide to do just the fronts in the morning, and the backs in the afternoon...or next day. It doesn't look that taxing, but it can be in the summer.
Go for it!