Welcome! What do to shoot with the D90? I have one from when they were first introduced and loved it. Even though I have added a D800 and D7000 to the kit, I enjoyed shooting with that camera the most since it was small ad light enough to take it with me every time I left the house resulting in more unplanned chance captures. I used the kit lens, 18-105 a lot, then added a 50 1.4 and 10-20 3.5 lenses but started getting serious with it when I added the 70-200 2.8. For general purpose walking around lensed the superzooms make sense but if you are interested in any specialty such as portraiture, sports, macro, low light, the superzooms are pretty compromised. At least one low-cost prime should be added to the kit for low light, interior shots and people shots with shallow depth of field. A 50 1.8g is a very nice sharp lens that gathers a lot more light than a zoom or a 35 1.8g for more general photography of whole scenes. Yongnuo has a 50 1.8 auto focus lenses that is a real bargain, about $50 that is well suited to low light shooting or portraits. Nikon's 1.8 is better but $275.