Open Vim with `vim filename`
Press `i` to enter insert mode
Type your text
Press `Esc` to return to normal mode
Press `:w` to save
Press `:q` to quit
Press `:wq` to save and quit
Press `:q!` to quit without saving
Press `dd` to delete a line
Press `yy` to copy a line
Press `p` to paste
Press `u` to undo
Press `Ctrl+r` to redo
Press `/text` to search
Press `n` to go to the next search result
Press `N` to go to the previous search result
Press `h` to move left
Press `j` to move down
Press `k` to move up
Press `l` to move right
Press `:help` to open help