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.
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 :)