As a wannabe programmer, one thing I always lacked from these sites was the ability to somehow see my code live. I.e. it's fun to write html and css on codecademy or python from LPTHW or whatever but how on earth do I get it on the web or assembled into .app? In actuality, the complexity that surrounds DNS providers, server apps (or whatever you call filezilla etc), server providers (here i mean heroku, AWS, Cloudflare etc), those weird githubs and repos that people chat about etc etc, is way more deterring than actually learning what a "class" is.
Learning is fun; endless googling is not.