1) tripod, I use the manfrotto 561 BHDV-1 monopod for 90% of stuff as its almost a tripod but with smooth pan/tilt and very quick change in heights.
2) if you havent got one then get/borrow/loan/steal a fast lens, at least a 2.8 but better a 1.8/1.4
3) practice focusing, best place I'v found is...