On writing, see Jim Pryor's Guidelines on writing a philosophy paper.
Useful glossaries are Jim Pryor's Philosophical Terms and Methods and the Dictionary of Philosophical Terms and Names. The Stanford Encyclopedia of Philosophy is good, although nowhere near complete.
An instructive site to browse is David Chalmers' Web site.
See the MIT Philosophy page for colloquia dates, other course information, etc.
Richard Holton's "How to Build an Argument and How to Write an Essay"