I just want to say how freakin awesome this game is. I've only been playing for a few days and already this game has hooked me more than OB and Skyrim did. My question is on the expansions. I'm not sure if I can do them anytime or do I need to be a certain level. With OB, I did SI very quick. Not sure if Morrowind levels with you or not. Thanks

Glad you like it! Welcome to Morrowind. =)

Both expansions are aimed at tougher characters. The standard view is that you should be at least level 20 doing Tribunal and at least 25 doing Bloodmoon. You can go to each when you're a lower level and do plenty of the quests, but eventually you're going to hit some hills that you can't climb until later.