So this is my dining table:
It was totally second-hand, purchased from a neighbor for $50, except it looked like this before:
In starting, I took the table outside, set up a giant sheet, and spent about an hour to wipe down the table, carefully spray paint, and then spray again for any missed spots. It ended up being a really easy process and the paint took to the table fairly well!
After spending approximately $40 total for the table and two cans of spray paint, I have a lovely new dining area!