The question is about Emacs configuration, but the keybindings might also be unfamiliar if you're coming from Vim. When I was learning I printed https://www.gnu.org/software/emacs/refcards/pdf/refcard.pdf and taped the two pages to my desk right in front of the keyboard for probably a 3-4 weeks. It was useful and also felt great when I didn't need it any longer.