I don't actually remember learning anything from games but apparently I learned how not to die in the event of high speed landing which only came about because there's a steep hill near my house which basically leads to the rest of the town, so now and then in summer me and my mate go cycling. Then one day as we peaked out of speed down the hill a kid jumped out in front of me while not paying attention and I caught my front wheel under a fence and popped off the bike head first towards the paving slabs and then for some reason I saved it with a dive roll and slide, which while being awesome, hurt a little more than you'd think. It also awestruck the parents of said child who where there at the time because I'm not exactly the type you'd see pull that kind of move as I am quite weighty.
To this day I have never replicated or really wanted to replicate that day and I'm not sure if I could.
Like Erana I generally know things and stupid facts I have no actual interest in before I play a game where they are presented to you, like the fact that the first man made object to break the sound barrier was the whip, true story.