I realize its a bit of reading, but I have my own caresheet if you like.
http://www.freewebs.com/albertabredg...s.htm#36067187
pete's right tho, a basic tank you need the following:
-15 gal+ (ground space, not hight counts with leos)
-Under tank heater
-either one of the following as a substrate: Repti-carpet, slate tiles, paper towel
-water dish
-1 hide on warm side, 1 hide on cool side minimal.
-humid hide (any container with a hole cut in side or top and filled with about 1"+ of moist vermiculite)
-screen is recommended
-day/night lights recommended
-calcium dish recommended
-water treatment (to remove chlorine)
-reptile calcium powder (to coat crickets)
-thermometer (you NEED to make sure temps are 85-95°F during day, 75-85°F at night, and leopard geckos require a thermal gradient, one side of tank warmer/cooler than other side)
that should cover most everything you will need