So I finally bought Oblivion. My first Elder Scrolls game. I have only played fable prior to now, and I like this game much better. A few questions:

1) How do you increase your carrying capacity?

2) Can you make an NPC love you?

3) If you can make an NPC love you can you marry them?

4) Do weapons/armor of different materials decay at a different rate?

5) What is the best quality/material type?

6) Does the main story progress if I ignore it/will the world end if I do nothing?

7) Do the Vile Lair, and Wizard's Tower expansion packs containers count as owned containers?(so my stuff won't vanish from them)

8) I'm sure I'll have more as time goes by.