I certainly am not searching for this answer properly. It should be obvious.
Basically, enter goes to the start of the next line.
I want the opposite of enter. I want to go to the start of the previous line.
k just goes up one line, and leaves the cursor where it is. I want to go up one line, but the cursor should be at the beginning of that line. By "beginning of the line", I mean where I started typing in the line (after all indentation). Basically, the reverse of enter / return. Surely there is a shortcut for this that I am missing?
The - (minus) command will do what you ask for.
I certainly am not searching for this answer properly. It should be obvious.
One way to search properly is to read :help motion.txt.
The table of contents has an item Up-down motions, either scroll down, follow the tag or type :help up-down-motions.
The first item after hjkl and its variations is -:
- <minus> [count] lines upward, on the first non-blank
character linewise.
Another way is to search in the vicinity of the command you already know to do the opposite: :help <CR>
The item before that one is -.
The generally best way is to read :help user-manual which will not only teach you the commands but also where and how to look for help.