Upper ball joint and Front Differential leaking

I ordered the parts yesterday for a new 4 wheeler I bought. 97 fourtrax 300 4×4. The front differential has a small leak from the left side where the axle goes in. So I figured I would order seals for both sides. I know the axles have to come out (I have not started into the project yet, just looking for some how to.) and the right side upper ball joint is busted. So I ordered it as well. I was gonna do the upper and lower but funds are a restriction unless it needs it. So I guess I’m asking…. How do you remove the axles from the front diff, and how do you remove and reinstall the upper ball joint. Thanks for all the help in advance!!!