more detailed, x removes current char, p paste it after cursor
s delete char under cursor and enters insert mode; S delete whole line and enters insert mode
Insert last inserted text
Use gg=G to indent all file
Simply use Ctrl-i or Ctrl-o to do this. Also check help: :help jumplist for more.
Use Ctrl-T and Ctrl-] to move backward and forward in help. Ctrl-] also opens new link in help.
To jump to last edit place use ’. or gi - the last one works only when nocompatibile is on and enters edit mode
Only reason I do not like to use vim was Esc key. It distracts me to hit it all the time. But now, I found that C-[ is addnational Esc and C-c cancel insert mode. So I’m back to vim!
I also use Caps Lock as Control - much more confortable.