tridactyl_emacs_config VS emacs.dz

You can change Firefox's default modifier to other key (so new tab will be, for example, A-n and you will be ablrle to bind C-n to "down"). You can check my config for tridactyl - I described it in readme

There is tridactyl with emacs bindings. It is far from perfect, but it brings some resemblance of Emacs hotkeys in Firefox.

You can change the modifier key used in Firefox bindings. Go to about:config page and set ui.key.accelKey to 91 (WinKey). After that C-n will be changed to Win-N. BTW you can use emacs bindings in Firefox, see https://github.com/jumper047/tridactyl_emacs_config

Regarding tridactyl, you can check my humble repo with emacs bindings here - https://github.com/jumper047/tridactyl_emacs_config

I also want to add that there is a large list of personal Emacs configs out there that you can take inspiration from https://github.com/caisah/emacs.dz

You could also scour emacs config files, probably of the classic variety, for inspiration.

I found this kinda of directory of configs, maybe it can be helpful: https://github.com/caisah/emacs.dz - I'm not sure if they're beginner-friendly, but some seem to be well documented, at least from a quick look.

There's also emacs configurations list

I think a nice overview is at https://github.com/caisah/emacs.dz

There are lots of other "starter kits". There are also lots of Emacs users who have posted their configurations. In some cases, they won't work directly for you, but might give some inspirations. Others are more like starter kits. Here's one list: starter packs and config files. However, I can't vouch for any of them, and they may be built on their own set of unusual assumptions that you don't like but can't figure out how to disable. Some might only work with older versions of some packages. Some might only work in the latest, pre-release versions of Emacs. Etc.

This might provide an interesting resource to reference: https://github.com/caisah/emacs.dz