I have alot of her books and all are easy to follow.
Her latest book Quilts on American Barns is for more advanced quilters.
My favorite is Stars Across America, lots of different stars to do.
Still Striping and Quilts Through The Seasons are the best for variety and easy to do.
Be sure to watch her videos on her website. Look for the button that says television and videos.
http://quiltinaday.com