What does my Venus Flytrap need to grow and be healthy?

Not alot really.

You'll need an adequate sized pot full of peat mix (peat:perlite:sand / 70:15:15), rain water (important, do not use tap water it will kill your plant, if you have no rain water use distilled water) and a large bowl or plant pot (without holes).

Plant your Venus Flytrap in the peat mix and place the plant pot in your bowl/larger pot and fill the bowl/larger pot up to an inch high with rain water.

Simply place your Venus Flytrap in the sunniest and most hummid environment you have and your plant should grow.