These are some basics concerning Material UI buttons.
You need a react application for this video:
npx create-react-app [your-app-name-here]
You also need to install Material UI:
npm install @material-ui/core @material-ui/icons
Versions from package.json:
"react": "^16.13.1"
"react-dom": "^16.13.1"
"@material-ui/core": "^4.11.0"
"@material-ui/icons": "^4.9.1"
Feel free to leave questions or requests.