That is an awesome deal for that setup. Definitely give the deck a good lookover, make sure there's no cracks in the sidewall or topsheet that the guy who's selling it to you might be neglecting to tell you about. Otherwise, "nicks and dings" tend to only have cosmetic damage. They won't impact your riding. This setup should last you a good long time. You should have a lot of fun playing around on the deck and it should be pretty nice to learn on.
As far as a tuneup, if he only used it for a day, you should be able to ride it as is.