Supply list:
Permatex Ultra Black RTV
Green Scotch Pad
Bearing grease or Vaseline
Clean rags
Brake Cleaner
Wire brush
Socket set with extensions with 10mm, 13mm and 15mm sockets.
A drift and hammer to drive out a roll pin.
A shop press to install the new bearing onto the Jeep input shaft. If you don't have one, I bet your local transmission shop will do it for you.
New seals for the tail housing and input shaft bearing retainer are a good idea.
The shims you will find next to the front bearing race (inside the input shaft bearing retainer) will likely be all you need - just reuse them.
Here's a link to my DIY rebuild of a T5. You will not tear down the main gear train, or remove the countershaft. So don't get overwhelmed. The reverse/5th gear shifter fork will probably not need to be removed either.
I've sent you my email so we can share pictures to help with details.
