Unlike bash which uses readline, zsh has its own implementation of a line
editing library -- zle. A lot of the core bindings between the two are the
same, e.g. Ctrl-a and Ctrl-e to go the beginning and end of the command line
prompt, respectively.
All available zle keybindings can be listed out by running bindkey without
any arguments.
The best way to check out an unaltered version of this list is by starting a
fresh zsh process with no RCS files loaded in. The -f flag does that. Note
though that when zsh is starting fresh, it has to decide whether to start in
Emacs mode or Vi mode. If it sees that your default editor is something like
vi, vim or nvim, then it will start you in Vi mode.
Starting in Vi mode can be confusing because none of the standard Emacs
keybindings like Ctrl-a and Ctrl-e are available in that context. So first
ensure you're in Emacs mode by running:
❯ zsh -f
lastword% bindkey -eNow you can list out all the keybindings:
lastword% bindkey
"^@" set-mark-command
"^A" beginning-of-line
"^B" backward-char
"^D" delete-char-or-list
"^E" end-of-line
"^F" forward-char
"^G" send-break
"^H" backward-delete-char
"^I" expand-or-complete
"^J" accept-line
"^K" kill-line
...See man zshzle for more details on zle and bindkey.