Here's some pointers from a D5200 user (I haven't read the other responses so hopefully I don't double-up):
1) Live-view drains your battery more quickly. It also causes the VR on any lens to work constantly (draining more battery and possibly reducing the life-span of the VR in the lens). Live-view also usually takes a little longer to focus, draining more battery with each focus. If you have set your camera to continual focus, then even more battery drainage will occur since the camera in live-view will constantly refocus.
2) I have set my camera up to RAW-only. If you set it up with JPEG and RAW, it will likely take up more processing power, and it'll use up more battery power with each shot.
3) I use single-point focusing. I don't know if this saves battery for me, but that's what I do. Also, don't use the built-in flash, that'll really drain your battery.
4) If you leave your camera on continually, it'll drain the battery. Turn it off when you're not using it, it turns on extremely fast so there's no worry about missing a shot (unless if you're in the midst of shooting continually).
5) If you're constantly focusing your lens and not taking a shot, you'll also end up draining the battery. Just because you don't click on the shutter doesn't mean you haven't used up battery power.
6) Auto mode is a battery drainer. It uses more processing power, pops the flash up when you often don't need it, etc. The only excuse for having a DSLR in auto is if you have a prime lens and you have it set to a quick aperture, otherwise I'd just be using a point-and-shoot with built-in flash. I find DSLR's in auto mode with basic zoom lenses don't really edge out the competition (decent point-and-shoot cameras). You need to take advantage of what the DSLR has to offer and manage the aperture, ISO, and shutter speed; you also need to understand how to use flash, and/or (preferably AND) have a prime lens or a quick zoom lens (f1.8-f2.8 are great apertures to have as an option).