I had expected slightly more advanced lessons, but it is exactly what it says - for beginners.
If you've never held a flute before and want to play, this is a book for you. If you already know some basics, look for something more advanced.
The songs and melodies are simple, but can be fun to play, and it's good avista practice. There's also simple duets, which can be helpful if you want to play with a friend or teacher.