Hey all, I'm kind of new to photography, and I'm considering getting a digital camera just to practice my shots. I'll be mostly doing outdoors/landscape shots. I've searched through all the photo shops, but the technical jargon seems pretty confusing. I want to get a camera which is actually good for practice, but I'd prefer to do my own research rather than leave it up to the sales straff. What "features" should I look for in a camera? So far I've figured out that manual override settings and interchangeable lens are important. What about megapixels - is 4MP good enough for landscapes? What other aspects of the camera should I also research? My prince range is pretty low (aiming for under $500), since its only to be used for practice.