I have never played Morrowind, mostly because I didn't have a computer able to run it. Now that I'm going to get a new computer soon, buying and playing Morrowind tops my to-do list. I just had some questions concerning the gameplay, and various tips you guys could give me without any spoilers.
I'm thinking about making a Khajiit character that specializes in Spears and Axes as a secondary weapon. He may also be skilled at Alteration and Mysticism. I think he may also do Security. I want to know what is the big difference between Major Skills, Minor skills and Misc. skills. What's the point in having three different skill categories? How much does Minor skills affect leveling?
Anyway, I was also wondering what tips you guys recommend to make my first experience with Morrowind an awesome one. And if you guys have some suggestions for a good character build, list them here, too.

So far, I think my character will have:
Major Skills:
Spear
Alteration
Mysticism
Security
???
???
???

Minor Skills:
Light Armor
Athletics
Acrobatics
Axe
Maybe Armorer?
???
???

Let me know if this character build is good!
Thanks!!