Quilling Book Techniques & Inspirations by Jane Jenkins is my favorite Jenkins book, a must have for the more advanced quiller. The quilling techniques covered in this book include variations on open coils, wheatears, husking, alternate side looping, tight coil variations, fringed flowers and crimping techniques. The projects pictured are truly inspirational. Jane has a unique way of combining shapes, tucking closed coil shapes into more open shapes, and combines them with the specialty papers we have come to love (dark center, graduated strips, and two toned papers) as well as standard papers. This is not a book of patterns but rather a book of technique.
I made the little trinket boxes pictured here after reading Jane's book and did a blog post about how I made them.