My absolutely best tip for all Pentaxians is to visit the local flea market / charity sale / second hand shop and pick up some old Pentax prime lenses. First of all you make a good deed and secondly you will become a happy owner of a splendid piece of glass.
Not only are the Pentax Primes (most of them) superb in quality, feeling, and rendering, they are also great fun to use and will help to learn and understand the basics about photography.
With the help of PF you can find out all about shooting with old prime lenses as well as get a quick overview of what lenses to look for, start out e.g. with a SMC M 50mm f1:7, you will quickly find one for some few dollars, you might even get an old analogue camera in the same deal that can be used when your ready to take the step "back" to film shooting that also got its own charm.
Uploaded photo is shot with Pentax K3 and SMC Pentax-M 28mm F2.8, I have only adjusted the white balance and cropped it a bit to get a better perspective.
Get out there and get some old primes....