Personalize your desktop:  Adding / removing apps to / from your dock, re-arranging the apps, change the desktop background, add your own photo, explore the Notification Center  - Personalize your Desktop and positioning of the dock in System Settings -> Desktop and Dock 

Trackpad - System settings -> Trackpad for options

Control Center on your Mac - Customize your control center - System settings -> Control Center & Menu Bar control

Darkmode - Support Page

Stage Manager - Apple support video and Split Screen video 

Add a Desktop - Go to Mission Control - > Hover cursor at top of screen

Finder - Organize Your Work

Spotlight - Search using Spotlight - Keyboard shortcut is: hold down the Command button and tap the Space Bar  - find and open an app, a file, get a calculation, get a definition, convert measurements.

Safari - Browse the Web - Command T to open a new tab - Smart Search URL bar - Safari Reader - Share Arrow to add a bookmark or save the website to a Note.

Screenshots - Share What’s on your Screen - Command Shift 5 opens all your controls for screenshots and recording, Command Shift 4 drag area you want for a screenshot, Command Shift 3 for screenshot of whole desktop.  Watch this video

Accessibility - Enable Accessibility features - Change your pointer size under display, Zoom - use a modifier key - Text to Speech 

Multi-tasking - Work with multiple apps - keyboard shortcut Command + Tab to toggle through open apps quickly

Photos - Edit photos with Clean Up - Live Text on Mac - 

Keyboard Shortcuts - Video of shortcuts - Command C to copy, Command V to paste, Command Spacebar for Spotlight search, Command Tab for app switching, Command Q to quit an application, Command T in Safari to open new Tab, Shift + Command + 5 opens screen recording & screen shot options, Command H hides all the apps

Airplay - Your Mac can act as an airplay receiver like an Apple TV

LIVE Video in Keynote - you can use live video in keynote and a green screen effect - watch this video