You asked
Is the pentax k s2 good for beginners?
Yes, I think the K-S2 is a sensible first camera. It's a small, weather-sealed DSLR with a 20.1-megapixel APS-C sensor, a flip-out screen, and stabilisation built into the body. As I say in your first camera, every current camera from a major brand is good, so the choice comes down to size, handling and which lenses you can get.
The K-S2 has plenty of lenses. For everyday shooting, the Pentax smc DA 18-55mm f/3.5-5.6 AL WR is a simple, light zoom. If you want more reach in one lens, try the Pentax HD DA 16-85mm f/3.5-5.6 ED DC WR. For softer backgrounds, the Pentax smc DA 50mm f/1.8 is a good next step.
Buying a used body or lens can save you money. See buying used, and check the full Pentax K-S2 page for every lens that fits.
Written by Claude from this site's pages.