Hello, and welcome.
As a beginner myself, I've found this site invaluable. I assume you've got a Pentax and that's why your here - but even if you're not, there is plenty to learn from.
Also recommend the following book:
Read This If You Want to Take Great Photographs
it's not online, but it's a very simple read - absolutely everything to keep you going if you want to get out there and practice (it's a book to give hints, guides and inspiration, not thousands of pages of technical stuff).
Just get out there and shoot!