Nc3 or c pawn freedom?

I need some advice on how to think about the beginning game scenario of blocked c or f pawn in order to get the knights to c3 or f3.  What are the advantages/disadvantages of advancing c or f pawns to protect d or e pawns at the expense of blocking Nc3 or Nf3?  What are the advantages/disadvantages of Nc3 or Nf3 at the expense of preventing c or f pawn movement?  Does anyone know of videos or resources that deal with this topic?  Thank you.

Hey, we live close! who are you?

Generally, knights first, but it does depend of an opening.

d4 - Estragon wrote it already.

Ruy Lopez - often white will play c3 in order to prepare d4 and vacate c2 for his bishop.Queen's knight is rerouted to king's side via d2-f1-g3(e3 sometimes).

Kings gambit;Modern/Pirc - Austrian attack; Sicilian grand prix;, white plays early f4

KID Samisch,- white plays f3 (knight often goes to e2)

...

Thanks everybody, I'm working on it.