Read the gouge on the 'blue' interview site.. I put a gouge from last year, it was spot on...
Know the systems for the airplane you are flying..
know the cruxx 4 arrival..., lost com, 135 o2 req.
edit:
here is my gouge...
Came in for a 9am appointment. Dir of trng gave me a timed 30 minute 21 question test, true/false and fill in the blanks, covering the following material: part91/135 oxygen requirements, tstorm penetration, take off mins 91/135, landing mins91/135, 91.175, decode metar, decode taf, decode notam, pirep, and winds aloft, cruxx 4 star lost com scenerio, max hld speeds, airspace spped limits... after the test i sat with chief pilot and dot for around 1 hr.. very nice guys! made me feel at home... questions they asked were, any accidents or incidents? where do u see your aviation career going? tell me about your last emergency, tell me about the a/c systems you fly: gear, tks, electrical, fuel.... how does a governor work... we also spoke about the company... they called me the next day to tell me i got the job...