C4B etc. are all cabling abbreviations.
C = cross, T = twist, B = back, F = front.
To type out the definitions for all the stitches you asked for would take a while, though. Do you happen to have one of "The Harmony Guides to Knitting Stitches"? They give complete instructions for all of those abbreviations.
Stitch markers are those little round things that you can slip on your needles between stitches to help you mark your place in the pattern. Foldedbird has been making some really beautiful ones lately (but I can't remember which thread I saw them on).
Sorry, that probably wasn't much help, but maybe it will get you started.