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?