The Canterbury Tales, Geoffrey Chaucer. Revised version of http://ota.ox.ac.uk/id/1678 . The Works of Geoffrey Chaucer / edited by F.N. Robinson Chaucer, Geoffrey, d. 1400 Robinson, F. N. (Fred Norris), 1871-1966 2nd. ed. xliv, 1002 p. :  leaf of plates ; 1 port. ; 25 cm. Oxford University Press London Copy consulted for transcription: Bodleian Library, 27976 d.135 = A4.783 1957
For School work
I had to use this book for school my senior year of high school. It really cut down on how much weight that was carried to and from my classes, locker, and home.
The only thing I don't like about it is the spelling. Its confusing because its spelled like the word sounds. For example, the word KING is spelled KYNG. It takes a while to figure out what the book says, but its worth it.
This is a fun tale. It's actually in middle English so it is not nearly has hard as old English--so don't shy away. They are really fun tales.