*night lights - moonscapes, dusk skyline, traffic, fair, etc.* Nailing Night Exposures: Here's a guide to the rough settings you're likely to need for popular low-light subjects.
Heres a great Canon vs Nikon shooting modes cheat sheet to help understand Camera settings
10 camera settings you need to learn to master your Nikon (and 10 you can manage without) Digital Camera World. Photography tips.
Take better photos - Shutter Speed Crib Sheet Shutter Speed Tutorial