First of all....:welcome:
There is a lot of information about lifts on this website about lifts if you use the search function.
To summarize, you have basically three options:
1. Torsion Twist/ Shackle Lift (Cheapest)....will get you approximately 2". Thats what I have on my 2004
2. Body Lift. A little bit more expensive, but you will get full 3"
3. Suspension Lift. The most expensive, but if you will be offroading, this is the best route to go. Will also be 3" or 4" (I think they are 4" lifts, but I could be wrong on this)