A fine, and surprisingly humorous, work on punctuation is "Eats, Shoots & Leaves" by Lynne Truss. Very amusing and informative, even if you don't like grammar.
BTW, for correct English usage sticklers, it has been proposed that "ain't" is the only correct way to make a contraction of "am [I] not". We usually incorrectly turn to "aren't", which is in the wrong person, number or both. Hence "Ain't I a lute player?" would be more correct than the certainly wrong "Aren't I a lute player?" "Ain't he..." would be an incorrect use of "ain't". Wake up and press "delete". Leonard Williams To get on or off this list see list information at http://www.cs.dartmouth.edu/~wbc/lute-admin/index.html
