There is so much equipment out there to purchase. You could spend a fortune. However I suggest you purchase more books then equipment. When you really understand how light and your camera work you do not need a lot of extra stuff. Plus many books will show you how you can use common everyday things as photographic accessories. Later we will talk about diffusers and reflectors but as an example instead of buying these you can use a sheet for a diffuser or a piece of cardboard for a reflector. Also check out photo magazines. Rangefinder is free and has an on-line magazine as well. http://www.rangefinderonline.com/index.shtml
One of my favorite authors is Scott Kelby. His books are task oriented with lots of illustrations. And he’s kind of fun. He also has an amazing teaching site: http://kelbyone.com/ There is a slight charge (first month is free) but once you start checking out his lessons you will be hooked.
The more you read and watch the more interesting photography is going to be. The possibilities are endless.
Also if you really want to get the full treatment attend a conference. In Texas there is an amazing event every May. http://tppa.org/ It says it’s for professionals but there are lots of wanabees.
Have fun learning.
