The Colours and Shapes in Clojure learning path uses an interactive website called Maria.cloud. It lets you write code and see the results straight away. You can also make your own note and save them once you have taken a copy.
####Hint::Requirements We will ask you to login to Maria.cloud with your GitHub account.
Please create a free GitHub account if you do not already have one.
Open the Maria.cloud website and sign-in using the same GitHub account.
You may be prompted to authorize Maria.cloud access to your GitHub account. This is safe (and can be revoked after the event)
Click on the start here link for the Feb 2020 London ClojureBridge event
Press the duplicate button to create your own copy (so you can save all your code)
You should now have your own copy, as show in the top bar
Try logging out of maria.cloud and then logging back in again (I know, but it might work)
If you are using Chrome, try using an Incognito browser tab or window. Or try Firefox browser.