Comment by Qwertious

>The most obvious example for me is git, which I use nearly every day, but still have an embarrassingly shallow understanding of. Any time something “goes wrong” I’m googling for a magic command to fix it,

This is basically the reason I use Mercurial. It actually makes sense without getting a bloody degree in "how to use your DVCS", and the help is quite nice, and not a godawful clusterfuck like some popular DCVSes that were developed by developers of major FOSS kernels circa 2005.