Fake books are the easiest to start with because you don't have to know chord progressions - they are given to you on the sheet music.

I review some literature in the "Jazz, Fake Books, and Improvisation" book review section of the Reference section; these will give you a good idea of how to get started.

Christmass jumpers, diet books and plastic surgery vouchers are among the least wanted festive gifts – but four in ten will fake joy when receiving them, a survey has found.