Have aread through the sticky threads in this section of the forum, theyre written by frog and are very informative.

Also have a look through the DSLR gallery thread plenty of hints and tips in there. get some of your photos up too, so people can have alook and give out constructive criticism where needed.

Sarah of Dicko&Sarah has the very same camera as you, might be worth a pm if you get stuck.

Practice makes perfect