Get a $10 lamp fimmer from Home Depot to regulate the heat, get An accurite temperature guage to start. you need a way to regulate and measure the temps. heat lamps are not a must . but they work for ambient temperature if your having issues. they are cheap $25 should get you a 50 watt bulbe and a good aluminum hood. (50 watts should be more thne enough for a 10-30 gal tank. you may even want to get a dimmer for the heat lamp as well incase it its a little to warm at full wattage.
get some cheat Terricotta dishes (the kinds flower pots siti n so when u water them it dont make a mess) and make your own hides that are tight fitting if you dont already have some...
probably best to explai nwhat you have already and post a few pictures.