I tend to agree with Don. You can gain knowledge from watching videos, reading books, and even sitting in a classroom. However, you can't develop skills unless you put that knowledge into practice, and without a competent instructor to help you out, it's sometimes hard to know whether you are doing something right or wrong regardless of the knowledge you have.
I've learned a lot of things on my own. Unfortunately, it's generally a much slower process than having a competent instructor to teach, evaluate, critique, and encourage. When I train with a good instructor, the process is much faster.
I'd say get the videos, get the books; watch them, read them, and then watch them and read them again. As your finances and time allow, get into a class and get some good instruction. Most good instructors are more than willing to help YOU work with YOUR limitations. If they won't, then find a different instructor. Remember not to dwell on your disabilities, but instead, focus on your abilities!
Chris S.
NRA Certified Pistol, PPITH, & PPOTH Instructor
NRA Certified RSO
Missouri CCW Instructor