If you don't already watch anime, you won't get a lot of stuff in Steins;Gate. That alone makes it purely for people who are already fans of anime.
I was going to recommend it to my sister who is extremely picky about anime until I realized that I'd have to explain to her what 2chan, Akibahara, maid cafes, cosplay, that Ackbar word you can't say on GAF, dating sims, and 2D waifus were before she could watch it. Based on her very limited experience with anime she would think it's hentai.