yeah, books are pretty helpful, and CDs moreso. The pronunciation is a little difficult, even if you know the words, that's where the CD comes in. If you're serious about it, I can give both of them for $20. If you want to know more about the book, you can look inside the book at Amazon
here. It's pretty user-friendly, and I love it. But I have my worksheets and my self-made guide to help me through. Anything I forget I can easily look up.
You live in the US?