New "shop computer" LOL

I have never done anything with Ubunto or Linux, but I'm thinking about giving it a try. Our son got a Raspberry PI for his birthday a couple of weeks ago, and it came preloaded with a version of Linux called Raspbian. I haven't really played around with it too much, but I'm getting ready to dive into it. Is there anything I should know beforehand, or just happy exploring? Thanks.

PS: I read that SmallFlaccid (Microsoft, get it?) is looking to integrate Windows into car onboard computers in the near future. My only question about that is this: Will it cause these cars to crash for no apparent reason?

Probably won't actually crash, just lock up so nothing works till you shut it off and disconnect the power from the computer. :D