To add any concepts like reactjs and javascript follow the below steps

1. Create / Edit the reactjs and javascripts concepts file in src/pages/.
2. Those files linked into src/components/data.js and create a PR.

If you don't know anything about GIT the first time you enter the tutorial can be a bit confusing:

• What are the boxes on the right? (stages, commit and root folder)
• What do I click first?

We can use the joyride plugin to create a small (~5 steps) tour explaining all the areas of the screen and encourage you to start the tutorial by typing the first