To start each app, please make sure that node and npm are installed. Node js is a server technology and can be installed here: https://nodejs.org/en/

After cloning the repository, you need to install the dependencies. To start the server app:

1. cd coffee-chats-server
2. npm install
3. npm start

To start the client app:

1. cd coffee-chats-client
2. npm install
3. npm start

This should open a local version of the website in your browser.