If you do, I’ve just started a new website at How to Read Thai.com where I will do my best to explain how to do it, where to start, rules to be aware of and so on and so forth.
You do need to know the alphabet though before you start learning to read (strange that) otherwise a lot of it will be lost on you.
If you want to learn the language, the alphabet, etc., I can probably recommend a book…ummm, what was it…oh yeah 