Making money with photography is not easy especially since the advent of digital cameras going mainstream.
You need to take photos of things people want: themselves.
They like to LOOK at travel photos and creative HDR's, but do they buy? Yes, but only a small percent of people buy... My 15+ years of experience would tell you to do it b/c u love it and money can be made, but it'll come directly from a client such as a bride or portrait sitting fee, concert photo gig.
You can also try to offer educational tips and try for adsense clicks, but that's not all that easy nor profitable.
Wedding photography pays well, but it's also a bit saturated. For now, I'd suggest enjoying photography and if you can make some money along the way - then great.
Selling photos is not easy, but you can certainly try on places like istockphoto can work if your image is pertinent and amazing.
best o luck!