Hello Heinno, Welcome to the forum!
Well, you're in for a fun ride, photography can be a great source of joy and frustration, many times both! You can use it as a part-time hobby, full time obsession or even a profession, if you're talented, dedicated and lucky.
Here's a good starting point;
https://www.pentaxforums.com/forums/58-pentax-beginners-corner-q/247120-true-...tart-here.html
An overview of the essential basics for capturing images with a DSLR.
As far as advice, I'd say use your camera as often as you can, don't be afraid to experiment with settings, composition, exposure, just be creative. Not everything will work out well, that's usually how we learn.
Always use a lens hood.
Look into a good photo processing app, free ones are Picasa, GIMP, Faststone and others. With these you can organize, catalog, process and store your images, but eventually these apps will become limiting. Then, it's time to try a better program, my recommendation at that point is Lightroom.
Take care of your gear, buy an extra battery and good-quality SD card, I like SanDisk 32GB Ultra class 10's.
Pick up a Rocket Blower from the camera store or online. Google 'DSLR Sensor Cleaning' and watch a couple of tutorials.
Start checking out info on tripods, the photographer's essential piece of gear. Also, a decent camera bag, slightly bigger than what you need. Add a remote shutter release, lens-cleaning pen, circular polarizing filter for your len(s).
I guess I've spent enough of your money! Good luck,
Ron