Getting started

well with what you have you could have some java ferns, java moss and anubias and you'd do ok.

if you want to be a little more ambitious look into adding 1 or 2 more 36inch 30 watt bulbs with 6700K &/or 10,000K rating. If you add the light you'll need CO2- with that size tank most will tell you to get pressurized CO2 if you can't afford it (it's big $) I have heard of some people having success with DIY CO2 in larger tanks with a large number of 2 liter bottles and a disciplined routine of renewing the mixture regularly.

edit: if you do go DIY with the CO2 only add one bulb. 3 would be too hard to keep up with on the CO2 side- i'd be nearly impossible to get the CO2 saturation you'd need to keep algae at bay

there are lots of options with substrate too- if you go low tech with the plants i mentioned above your substrate will suffice. for rooted plants you can supplement with root tab fertalizers but an upgrade would save you the headache when your passion for planted tanks grows(as it surely will ) you can go the simple route and get a prepared substrate such as eco-complete or seachem flourite. But there are a lot of people who do thier own custom substrates and later lateritr and sand and peat and aall sorts of materials. if you're interested in avoiding fertalizers in a higher tech. tank look into mineralized substrates.

as far as fertalizers go - there are tons on the market. most are good and you will need to go through a lot of trial and error to figure out how to dose them in your tank with all of it's unique factors. The most simple and succesful fertalizing method is called the Estimative Index method (EI for short) and it is cheap too- doing a some reading will fill you in on how it works

do some forum searches here and on www.plantedtank.net on these topics to give yourself a little backround knowledge.

then find a picture of a tank similar to what you'd like to do and post it- then get recomendations on how to achieve that tank- there are so many ways to raise plants successfully decciding what kind of planted tank you want and then designing your set-up for that will be the easiest way to get what you want.

hope this helps!
cheers-K