When interacting with a document text area on MacOS (such as in the Notes app), there are a bunch of keyboard shortcuts made available to you via the operating system.
A couple common ones that I'm used to from Unix environments are:
ctrl-ato move the cursor to the beginning of the linectrl-eto move the cursor to the end of the linectrl-pto move the cursor up a line (this is a common previous keybinding)ctrl-nto move the cursor down a line (this is a common next keybinding)
A handy one that I wasn't aware of is ctrl-l which will scroll the text area
so that the cursor gets centered in the view area.
A much more niche one I wasn't aware of is ctrl-t which swaps the character
before the cursor with the character after the cursor. I can only imagine this
being useful for quickly fixing transposed characters in a misspelled word,
e.g. baer.
There are many more Document Shortcuts as well as well as keyboard shorcuts for other apps and situations. The full listing is at Mac Keyboard Shortcuts.