"Do you know some programming language? Are you learning a new one? Learn language X by comparing its instructions with their equivalent in language Y. Just select the language X which you want to learn about, the language Y that you already know, and start to learn!"
Do you want to collaborate? You are welcome. It's easy and fast (Just read the contributing.md).
I have an idea/suggestion, to get rid of the bullet points for the list item on the contributors section.
I have forked the project and made the changes locally in my computer. I added default Boostrap classes. I have a included a couple of screen shots, so you can see what I'm talking about.