If you use greek letters, mathematical symbols, or even particular emojis a lot you can make easy keyboard shortcuts for them in System Preferences. This makes typing notes and equations much easier. :
Shortcut Key For MathType | PDF | Collation | Western Calligraphy
LaTeX Workshop (Visual Studio Code) Keyboard Shortcuts by jcwinkler - Download free from Cheatography - Cheatography.com: Cheat Sheets For Every Occasion
How to type a ² (squared symbol) - Quora
How to Insert Greek Letters or Symbols in Word (6 Ways) | Avantix Learning
know your hotkeys - photoshop keyboard shortcuts posters | graphic design tutorials | adobe tips | 13… | Keyboard shortcuts, Mac keyboard shortcuts, Microsoft excel
Kappa Symbol (κ): How to type it?
Kappa Symbol (κ): How to type it?
How to quickly insert Greek symbols into your slide - Microsoft PowerPoint undefined
All Important Equation Shortcut Keys for MS Word (2007-2016) - YouTube
How To Split Table In Microsoft Word (Keyboard Shortcut) - PresentationSkills.me
Andre Alcantara on Twitter: "Hey everyone, If you use the Overleaf online editor, today I'm publishing Shortleaf, a Chrome extension that adds to it fully customizable keyboard shortcuts! Use it to type
Keyboard shortcuts for entering math expressions
How to Insert Greek Letters or Symbols in Word (6 Ways) | Avantix Learning
How can type letter "kappa" in Microsoft word 2010 with this font? - Super User
How to use equation editor in Ms Office (similar to LaTeX): Shortcut for typing Greek symbols - YouTube