Advanced Concepts and In-Depth Review, book five in the series, explores some more advanced concepts, as we'll look at the idea of "thinking the letter" and letting go of technique. We'll do some speed drills to continue to build up the number of letters that can be said in a single breath. In addition to name drills, there is a troubleshooting section, in which we'll explore how to get help from a speaker in the event we can't understand what they're saying or spelling. This book ends with several chapters of drills, in which we'll review letter pairs by themselves, and then the same letter pairs within names. 

If some of the drills start to feel repetitive and that they are going on too long for you, remember that you don’t have to do every single one. If you feel like you’ve gotten enough out of any particular drill, it’s okay to skip ahead.

Also, up until this point, you may have been doing most of these exercises without looking at a text, just listening very closely and repeating. As we get to these longer and more complex words and names, it’s okay if you want to look at the text. And if you’re working without a textbook, or if you’d prefer not to look at the text, don’t be concerned if you don’t get every single one of these words right from the first time you hear them. Just enjoy the process, and know that if you can’t quite get something, it’s probably intentionally designed to be very challenging. You might listen back again, and before you know it, you’ll have it. 

About the Series

The books and corresponding audiobooks is this series cover the exact same material. Although it's possible to work with the audio or even the text alone, most learners will find it useful to work with both the audio and text, usually at the same time.