Originally posted by Philoslothical
Best advice, is don't go looking for problems. It will suck the enjoyment right out of getting to know your camera. Get out and shoot, notice what works, what doesn't, what you can improve when shooting or in post processing. Keep an eye on your shutter speeds if you get soft/blurry results. Learn the proper way to hold and grip the camera to help counteract that. Enjoy the process, and the information will come along with it, just from cruising the forums here and reading your manual.
This, this, a thousand times this. I got my first DSLR (in fact, first SLR) last July, a refurbed K200d. I initially was paranoid of everything. Dust, why was it refurbed and was it really brought to "factory new" functionality, what about this, that, I dinged up my focusing screen with my rocket blower trying to get the dust out, I made it worse trying to make it better, finally I accepted it as it is and don't even notice the damage I did to it.
I'm still very very much an amateur, but through reading the manual, reading these forums, I've come a long way in understanding the tools I have. I've done far, far, far more reading than I have posted asking questions: all but an extreme few questions I had were already asked an answered, and easily found. By now I've realized that if I can think of the question, someone else has asked it here. I've also shot a few thousand pictures now, and what I didn't learn through reading, or did learn through reading, I learned or understood from shooting. Anyway, point of this is, these forums are a wealth of knowledge, and while I've got a long ways to go, I looked over a syllabus of a university photography class and by now, both by trying things and reading things here, I could probably teach that course.
Av and M are your friends, with a dash of Tv (K200d doesn't have TAv).
Much like the mantra of my fellow homebrewers, relax, don't worry, have a homebrew. I mean shoot some pictures.