This just looks like a bunch of random gists and code snippets. It's hard to understand how that would somehow "teach coding concepts" at all let alone "faster." Also what's up with the "Support us on HN" link at the top? That seems rather dubious.
Hello :) Thanks for your feedback ! Actually it will not teach you how to code but it's more a currated list of coding concepts shared by other developers in your tech stack. you have a direct access to coding concepts in your tech stack, of course not all of them will be new to you but you will be able to learn coding tips :)
I have added a button to support Stanza here on HN because I thought that people will think to upvote Stanza if they like it instead of just passing through. Getting upvotes on HN is a nice chance to get more developers on the website and with this button you can directly upvote the project :)
I hope I have answered your questions, feel free to ask me more if not ! :)