For perfecting your articulation
The Fife Book - An Introductory Course To Playing The Flute is a wonderful book, written by Liz Goodwin, which serves as an excellent introduction to learning to play the Flute.
The new full-colour revised edition with CD of John Pitts' best-selling recorder course. The eight extra pages in Book 1 have allowed for some new tunes and rounds, whilst retaining the well-known favourites that have helped to make the scheme such an enduring success.
A Self-Teaching Method with Play-along CD and Tune Book, by Dick Bagwell
Improvisation on Ostinato Basses from the Sixteenth to the Eighteenth Centuries