This is by far the best book of its type available. It is a pleasure to use, with excellent writing, superb quality material, and beautiful design and layout. This book gently leads the beginner into useful conversation without worrying about rules and grammar. The four audio CDs contain the conversations and exercises from the text, and provide the student with valuable listening practice. All three dialects can be heard on the discs.
Gaelchultúr also has an online course that follows this text.
I highly recommend this book.