1. Is there an easy way to remove the two bushings from the swing arm (the ones the shocks mount to)? I know they are just pressed in but....
No. They are buggers to get out. Use a hacksaw blade to cut through the bushing without scarring the swingarm bore too badly, the bushing will collapse a bit and come out.
2. The bearing in the first photo has some roughness so I will replace it. How do I get it out? Which may lead to question #3.
See #3, but possible you can bash it out from the other side. There's a spacer inside the bub that will shift a bit to the side, allowing you to hit against the inner race with a long punch or whatever. You should replace both bearings together, though.
3. In the second photo, do I need to remove the "retainer" to get the bearing out. Not sure how to do this without a special tool.
Yes. You can make a tool. You must drill out the stakings, a 1/4" drill about 1/8" deep is good. Then