The instructions told me to move the installation folder to my "home directory." I have no idea what the home directory is, so I left the installation folder in the Downloads folder and proceeded.
The installation failed to install a large file (3.4 MB) as follows:
The following (inessential) packages failed to install properly:
You can fix this by running this command:
tlmgr update --all --reinstall-forcibly-removed
to complete the installation.
So I tried that immediately, but I got an error message:
MacBook-Pro% tlmgr update --all --reinstall-forcibly-removed
zsh: command not found: tlmgr
Then I went here and installed the latest version of TeXShop. I created a test file and tried to save it, but I got an error message:
/Library/TeX/texbin/pdflatex does not exist.
I am now frustrated and lost.