Originally posted by manishved Best tip I had received years ago - this is a DSLR - you have nothing to lose - keep experimenting and note your settings and results. You will get the hang of it in no time....
With my previous camera, a K100D, I took about 10000 frames in 6 years, my K-3 has done 5000 this year! Mostly test shots working out how to use the camera, which I'm still coming to grips with. Its a complicated camera that, in me at least, encourages attention to detail and worrying about lens qualities in way I never did before. It's given me the impression my skills have gone backwards over the years.
For me at least, I have enjoyed using the camera most earlier on using an old manual lens, perhaps because I felt more in control not worrying if the aperture, shutter speed, ISO and AF have gone where I don't want them to be. So I would agree the suggestion that TAv mode is a good start.
Have fun.