Honestly, because of your injury I'd advise you don't attempt this. This is something that requires attention to detail and reading well. There's a high chance you're going to injure yourself or someone else.
A lot of powders are very similar in names (some only different by a letter or number) and the amount of powder required depends on bullet weight. This requires reading in detail which you've admitted is not possible for you.
Please do the right thing and sell your stuff before something tragic happens. Do you have an obudsman that helps you currently?