Here's the basic gear you'll need to get started and some notes.
General notes:
Break retainers (rubber bands)
Iron for waxing
Brushes (2x - One harder to clean, One softer to polish)
RaceWax Ski Wax Brush Kit Snowboard Set Three, Nylon HorseHair Brass
Rotary brush for the cordless drill (very optional)
Plastic scraper - you'll need many.
Gumi Stone to clean/de-tune edges
These wear down fast and should be touched after every training session. You will not need the file but should run the diamond stone on them.
I keep a 3 degree angle on both GS and SL.