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
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
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.