Soil: Something without any nutritional values. I use peat/perlite. BUT, those little bags of peat moss are fortified so you have to get something specifically for carnivorous plants or buy peat by the bale. You can also plant them in New Zealand Sphagnum Moss.
Watering: Always keep them in a couple inches of distilled, RO or rain water. Never allow the water to cover the crown of the plant. Yes, tap water really does hurt them - its the dissolved solids and salts.
Winter: move it to a spot with less than 40F temperatures for 4 or 5 months. They will survive in temps down to 20F so mine goes out to the deck for the winter. You can keep them a little drier in winter but not completely dry.
Feeding: You really don't need to feed them at all. They are green so photosynthesizing. Bugs are fertilizer - mine catches plenty on its own, even inside. The traps die after catching an insect - one use only.
Hope this helps.
