Vim keys to remember

 2j -> down
 k -> up

 w -> (word) next word
 b -> back
 d -> (delete)
      dw can be used
 c -> (change) delete and enter insert mode
 cw -> change word
 u -> undo

 >> -> indent
 v -> visual

 operator and noun


 H -> Beginning of doc
 G -> Bottom of doc

 0 -> beginning of the sentence
 $ -> end of the sentence

 dw -> delete word, to the cursor to right
 dl -> delete letter
 cl -> change letter
3dd -> 3 delete lines