Well you'll want to add a liquid fetilizer such as Seachem's Flourish or API's Leaf Zone if you start seeing brown spots or holes on the plants. =]
Well that depends. What room do you have your tank in and does it get indirect sunlight for at least 4-8 hours?
If so then you don't need lighting persay. =]
If not then you'd need a low watt daylight
(6,500 K) CFL
(the swirly/spiral bulbs). You're wanting around 2 watts per gallon. =] That way you have moderate lighting and anything you get should do well. =]