This video will be about macOS Big Sur and how to install it.
Download CleanMyMac X to prepare your Mac for macOS Big Sur:
https://bit.ly/2XWFJjL

Part 1. How to upgrade to macOS Big Sur
Clear old system junk
Back up your data
Upgrade your Mac (System Preferences - Software Update)

Part 2: How to clean install macOS Big Sur
Get a bootable USB drive
Download macOS Big Sur from the App Store
Create a bootable USB installer using this command:

sudo /Applications/Install\ macOS\ Beta.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled

+ Bonus tip: How to install public beta of macOS Big Sur
Head over to Apple Beta Program website:
https://beta.apple.com/sp/betaprogram...

The app mentioned in this video – CleanMyMac X by MacPaw:
https://bit.ly/3fUivkj

The detailed manual to clean install macOS Big Sur:
https://bit.ly/3kD4HhX


Contents:
00:00 - Intro: How to upgrade to Big Sur?
00:23 - Clean up your Mac
00:50 - Back up your Mac
01:02 - How to upgrade your macOS
02:01 - How to clean install macOS Big Sur
02:27 - Create a bootable installer
02:58 - Check your Applications folder
03:00 - Go to Disk Utility
03:33 - Mount the USB in Terminal
04:33 - Erase your startup drive
04:55 - Clean install macOS Big Sur from the USB
05:22 - How to install macOS Big Sur public beta
05:40 - How to keep your Mac clean