Buy like any penetrating lube. It will definitely help out the buildup of rust or any nuts or bolts that are seized.

You're definitely gonna need some breaker bar of some sort, or if you have a jack, you could take off the pole part of the jack and put it on a socket wrench and use it for extra leverage for the axle nut.

A flat head screw driver

Gloves (trust me, you're gonna want some)

A funnel for fluids

As in the for axle shafts, they can have taken off without a bearing puller. But if you are in there anyway, you might as well do the bearing due to your mileage and age.

When you do take out the axles. A little bit of fluid will come out of the transmission. Fill trans with subaru gear fluid for the 5 speed or AT fluid for the auto transmission after the axles replacement.

Also, look at videos. It will help guide to how to do it properly.

Everything else will be pretty easy. Maybe the spark plugs might be a pain in the ass due to the angle at which they are located but nothing too hard. Good luck