Hello! Well not to be mean but "not mechanically inclined" and "older Jeep" don't really go together but if your willing to try then thats great!
1. In theroy the sway bars and trac bars should unbolt. Now, since it's an older jeep the bolts will probably be rusted sold. In this case most stuff may need to be cut off.
The rear track bar bolts on top of the rear axel on the driver side right next to the leaf spring bolts. The other end is on the passenger side right above the axel on the frame. My jeep has no rear swaybar and I'm not sure any of them had any.
Basically the front trac bar does the same thing only the bolt points are opposite. Driver side frame just behind the steering box. Axle top on passenger side. The Front sway bar had two links on either side that drop verically from the swaybar mounted on the frame. The links should be in front of the axel on either side.
2. Not sure really. I have no rear trac bar. I still have the front and the FSB. I am gonna remove them too someday. My jeep came with no rear trac bar and it rides and drives fine as far as I can tell. LOL
3. Most box type (lowes etc...) have paint for vinal(sp?) cloth, Also auto parts stores. You need to determine what the material is. Clean it very, very well and then try it. I would suggest doing 1 piece and see how it holds up. Or look for used padding in a color you like.
4. This is a big one. Ac systems rely on 3 things. No moisture in the system, adequate refridgerant and proper pressure. The componats of an ac system are the compressor, the condersor, the dryer, and evaporator. The key is to make sure there are no leaks in the system. This can be checked with dye. Then the system needs sealed up(most likley leaking o rings) a vacum needs pulled on the system and it needs recharged with the proper amount of refridgerant. Now all of this is dependant on the fact that the system was installed correctly and ever worked in the first place. Honestly unlesss you experienced a quality auto shop MAY be able to fix it but it will get expensive and honestly if any of the parts need replaced there may be a hard time getting the correct new parts due to the fact that its an after market system.
5. Not sure, I like mine angled for my baby seat.
6. I am assuming your refering to the TORX bolts that jeeps have. Yeah they can suck. If you want to replace them you need to get a thread checker and fine out size and thread pitch. Then just buy new bolts of your choice. Fastenall, mcmaster/carr, bigger hardware dealers will be able to help you a lot more than the home improvement stores due to auto specific threads.
I am gonna add that you should buy some sort of service manual for your jeep. They are nice to have around.
Hope some of that helps. Good Luck!