Back to work

Boo Hoo! I had to go back to work today after my lovely week off. On the plus side, I also became the owner of a fabulous new camera - the Canon EOS350 DSLR. It really is a thing of wonder and great beauty, I just need to understand a bit more about the basic principles of photography and I will be on to a winner!
Have confused myself already with ISO speeds and white balance stuff, so if anyone could explain it to me in words of one syllable I would be very grateful!
Spent the last couple of hours taking pictures of absolutely anything and everything - plants, trees, my car, the washing up, teddy bears, need I go on? Great fun!
Countdown to my new job is on - I start my new position one week today. Scary!