I am reporting back. Bike is clean. It is indeed blue (I like blue). Also, it is hilarious how snobbish some people are. Picking on Huffy bikes. Perfectly adequate for me. lol
Chain lube used: went to local bike store, asked for chain oil and the guy only winced internally. He recommended Finish Line Wax Bike Lubricant. That is what I got.
Cleaning: after I made a mess in the garage with the broom, I decided to take that approach first. I used a dry brush to get off as much of the dirt as I could. This was amazingly effective. It went from caked with mud to merely dirty. I was also smart and did this in the alley instead of the garage. After that, I hosed it down thoroughly, then a bucket of soapy water and cloth. I also used a pot scrubber because there was quite a bit of rust on the rims. This resulted in a generally clean bike. Used Simple Green and an old toothbrush to clean the chain and other workings. I did not get every speck of dirt or grease off, but I did get it respectably cleaned up, then attempted to dry it and applied the chain oil.
I then attempted to ride the bike. When I was actually on the bike pedaling, it was very comfortable, so the size of the bike in that regards is correct. When I stopped however, even with the seat at the lowest setting, my feet did not touch the ground, even if I leaned to one side a bit. I had to get off the seat completely in order to get a foot on the ground. I'm thinking it's just too tall.
Working of the bike: it needs attention. Both wheels are wobbly when spun, the front only a little, the back is enough that its a problem. The breaks are only half working - one side will close, but I think both sides are supposed to move? Both front and back. The chain is also rubbing on a piece, so that's not right. The shifter has something going on because it shifted randomly, and didn't shift when I tried to shift it. But, it does work. I rode it up and down the alley.
Realistically, I think I'm going to sell it as is because it's too big for me. However, if you could help me figure out what size bike I do need, that would be appreciated. I'll attach pictures of the bike next.