Org-Mode can work, but it's not for everybody. I tried using it for GTD for more than a year, but ended up gradually abandoning it. It was too much friction when I least need it.
One problem is that it encourages to put both to-dos and reference material in the same place. I found this makes things a mess more often than not.
Also, it forced me to learn Emacs way more than I otherwise needed, instead of focusing on work.
I did enjoy some aspects of it though. All my to-do history from that time is still searchable. And I didn't have to upload my work and personal data to some random SaaS provider.
I actually ended up building a desktop GTD tool [1] based on those needs. It looks good, is low-friction and pleasant to use, runs on Linux, stores data in a local Sqlite DB. No subscription. But it's on Electron. I know HN seems to hate Electron apps.
I was always curious about trying this, but has always been put off by the Emacs part of it. How much Emacs do you need to know to use this comfortably?
Apart from the actual set up to include org-capture in it, not much.
Shortcuts to open a file (C-x C-f), close it (C-x k), and closing emacs (C-x C-c) would be the emacs shortcuts you'd need to learn. The rest would be org-mode shortcuts, like setting something as done (C-c C-t d) etc.
You will have to get used to being in Emacs though, that's for sure :)
Not much. I hardly know emacs (would love to learn more though...) and am using sublime as my editor, but have learnt just a few shortcuts to be productive in orgmode. Currently I run emacs just for my orgmode tasks and org-agenda which is fantastic.
+1 for org-mode and GTD. But then, I'm an Emacs Everywhere person also. I spend all day in org-mode. It's both a task-management _and_ a knowledge-management system, my exocortex. Couldn't survive without it.
https://emacs.cafe/emacs/orgmode/gtd/2017/06/30/orgmode-gtd....
http://orgmode.org/worg/org-gtd-etc.html