Others have mentioned this being a Javascript-specific problem, but it really isn't. I think there's probably a lot of money in building realistic software mode

Others have mentioned this being a Javascript-specific problem, but it really isn't. I think there's probably a lot of money in building realistic software models for learning. Maybe not full-production but at least realistic use cases beyond todo apps and author/book examples. Some of that is "build it and find out" kind of stuff, but I'd pay cold hard cash in a lot of cases to have a well-documented git repo to look at and learn best practices from (even if they're a bit opinionated) rather than have to stitch together my understanding from some diverse collection of "getting started" code, crappy toy examples and SEO-optimized blogs that have way way too many words per useful bit of information.