One thing attracted me to NXT is I don't have to have some super system to mine coins. 
Welcome!
That's right. We call this process "forging".
Forging has the purpose of writing transactions into blocks that are stored in the network. The more nodes that participate in this process, the safer the network.
Keep in mind that forging only gives a very small reward, it won't make you rich (doesn't work like Bitcoin where the inflation subsidies the miners, in Nxt we have a fixed supply). It's mainly for helping to secure the network.