Browsing around, I came across the Coptic Language entry on the Wikipedia. If you are confused by the Coptic dialects and subdialects that are cited in the UBS and NA apparatuses with versional evidence, the article gives some brief info that should help clarify.

Note also the article on the Coptic Alphabet.

This is all doubly cool because I'd been looking for some brief information on Old Nubian after seeing references to Nubian in some stuff Metzger had written. Who'd've thunk that the Wikipedia would have an article on that too?

Update (2006-04-06): Stephen C. Carlson with some Coptic-related Gospel o' Judas bloggin'. Note he points at a PDF file that is a transcription of the Coptic that is the Gospel of Judas. And the English is available too.

Update II (2006-04-07): If you're interested in typing Coptic in Unicode, then the Logos Coptic Keyboard is for you. (alternately, try here for Greek, Hebrew, Syriac and Coptic keyboards!) Note that this is considered beta software, though it uses standard Windows keyboard stuff. Also -- if  you have any suggestions as to a good, non-ornamental unicode Coptic font, please leave some suggestions (with URLs if available) in the comments. Thanks!