Anne, I liked your link to tips for dealing with auto-focus, especially
Spend the week with your camera manual and camera and learn how to use the different focus modes
That's probably the biggest problem with my photography lately, not knowing and taking advantage of everything my camera can do. I've had it for 2 years, ohmygosh 3 years now, so there's really no excuse! (Sony DSCHX90V.. it's one of those "bridge" cameras, more zoom and more features than a point & shoot, but no changing lenses like a DSLR, and between both in terms of size)