There are 3 directories, each directory is one challenge. In total, there are 3 code challenges totaling to approximately ~70-85 minutes.
Unecessary re-renders, fine grained control
State/Shared State, DOM manipulation
Loading state, API usage
The scaffolding is done for you. Simply run yarn in any of the directories to install the dependencies. Each application has a README with its requirements, you can use yarn start to start the local server.
Some might require connection to external APIs, but all information will be provided in the individual challenge readmes.