Originally posted by Habeascorp
Please suggest a couple of fixed game positions to start from to explore this area a bit more.
I hope this does not come across as a "cop out" answer, but I think Hans Kmoch's Pawn Power in Chess
is a great place to start.
He begins with fundamental concepts about pawns and simple positions, then he progresses to more involved positions like what you would see in a middlegame.
His nomenclature is messed up (he makes up fancy terms for simple things), but you can pretty much ignore that part and just absorb the content.
I have read good things about Andy Soltis' book on pawn structures, but I have not read it myself.