This site contains some great write-ups (how to's) for the Jeep Cherokee. There are lots of pictures and very good explanations to walk you through many common modifications done on a Cherokee.
Write-ups included on the site on 24/4/08 include :
Transfer Case Drop - This is actually pictures of me removing my transfer case drop but in reverse.
Jeep XJ Lift - RE6030 3.5 inch - This has a ton of pictures of installing the Rubicon Express RE6030 lift with full leaf packs
Lower Control Arms
RE1600 Trackbar
Front Coils and Shocks
Rear Leaf Springs
Leaf Spring Bolts
Pinion Angle - If you have vibes you may want to adjust your pinion angle
U-Joint Replacement - This shows how to replace the U-joints in your front axle shafts. It is a pretty simple procedure
Linkage Fix - The transfer case linkage can get screwed up and this is how I fixed mine.
Jeep XJ Regear - Regearing the front Dana 30 and the Rear Chrysler 8.25
Front Regear
Rear Regear
Xj Rear Latch Fix - If you are having trouble opening your rear door on your Cherokee then this is how you fix it.
Cherokee Hub Replacement - If your hubs go bad, this can help you replace those expensive little buggers.