I was flipping through a guitar catalog, and I noticed under some of the descriptions of guitars, some said "V necks" and others said "C necks" and so on, so my question is, what do those letters mean?
it is the shape of the neck's profile. It's not really a code, it just means that the neck is the shape of that letter.
Ive never played on a V neck before,
Check this out, this is a cross-section if the different neck types
hard vs look weird