Water:
Distilled, Reverse Osmosis, Rain or water with TDS under 100.
Keep media moist, the pot can sit in water so as to need little maintenance.
Light:
High light, these plants should receive around 6-8 hours of direct sunlight.
Most cultivars will redden up inside the traps.
Temp:
These plants are temperate, they stay outside during winter time as long as temps are over 25F. During winter they will go dormant, if you live in a harsh frozen zone, put them in a covered area such as a basement and bring them back out when it warms up a little.
Media:
Pure Long Fiber Sphagnum Moss (LFSM), LFSM + Perlite or Peat + Perlite.
I prefer peat + perlite for my Venus Flytraps.