Congrats, I have two Sony digital cameras. If you have any questions the manual can't answer, I'll try and help.

I never install the software that comes with the cameras, I have Photoshop and I use Irfanview for resizing. It depends on which software came with your camera, though, but most have resizing features. Irfanview is easier to figure out and a great free program.

To get your pictures in focus, press halfway down on the shutter button to get the shot in focus (it can take a few seconds, wait for the beep) then press the shutter. That part is a little tricky, but will really help with focussing.