There are literally dozens of textbooks, many of which are fantastic. That means, of course, that this list is not exhaustive. If I didn’t include your favorite text, please forgive me. I just wanted to answer the question “Where should I get started with my reading.” I don’t receive royalties on these books and I don’t have any affiliation with Amazon, its just a convenient way to link to books. Remember, the ASE’s guidelines are all available for free if you’re looking for the best value echo reading!