The College of Piping vol. 2 is an excellent resource for learning all about the transition to the bagpipe, and is one I highly recommend once you've mastered your first tunes using the College of Piping vol. 1 book.
In this book, you will learn all about the various parts of the bagpipe, and learn how to maintain your instrument. It also offers good tips on blowing the pipes and working with reeds.
Finally, it also offers an excellent history of the bagpipe from the ancient MacCrimmons to present day contests.