If you prefer learning from a printed instruction book, then take a look at my product
The Complete Amazon Marketing System. It is a 2-volume printed complete course that teaches you how to sell on Amazon. I start with the basics and take from there through.
One of the best courses on the market is The Proven Amazon Course from Jim Cockrum. It also starts with the basics but quickly gets you into advanced areas such as product research, bundling and private labeling. The wholesale sourcing segment is excellent. The The Proven Amazon Course contains essentially the same information as my course but is video-based, whereas mine is a printed product.
The third course is fairly new but has been getting rave reviews. It is called The FBA Stars course. It is also video based but the videos are all pretty short and very well organized. Best of all, he is offering one-on-one support and guidance.
All three of these courses have a money-back guarantee program