congrats on your purchase!
It's a very good camera you've got there. I trust you got a good price for it.
Before you think about what to get next, make sure you understand your camera well, and also understand photography basics (metering, exposure, white balance, etc).
When you've found what it is you want to shoot, and your present equipment cannot get it, then you look for an upgrade.
Thanks! I think i will head to the library later to see what books i can get onto.... for now, i hope to look more into taking pictures on landscape/ buildings and portraits!