Well, that is a broad question.
Cameras today come in the following flavors:
Cell phone
Point & shoot
Bridge or super-zoom
Dslr
And there is a wide range of complexity and price within each category
If you just want to take pictures of the family then a good quality point and shoot really is your best value. You won't get fine art quality but you will get reasonable photos in a very wide range of situations.
The next step up would be a super-zoom like the
X90 no lens changing and a lot of capability in a small package. I used a similar camera for many years and my wife still uses it. She wants nothing to do with my k-x, she says it has too many buttons.
But if you came from a ZX5 then you are used to SLR sized cameras and changeable lenses, yes? So what are you trying to do that you cannot do on the K10D?
I believe there is a learning curve for any digital camera (including the one in my cell phone which I still have not figured out). The K10D is a capable camera and likely can do whatever you want.
Post some specific questions and you might get a better answer on how to make it work. But there is no getting around reading the manual. My suggestion would be to start slow, pick one type of shot and master that before trying something else. Remember, no film costs here so shoot away!
And like Ole says, set it all to auto and start from there.