Pawn theory / exercises I am not a very strong positional player and I thought I could work on my pawn theory a bit. Are there common exercises or internet resources I could look into for how to play better pawn structures as well as make better pawn breaks?
Two other great books include


Pawn Power in Chess (the first of these classics) by Kmoch
Winning Pawn Structures by Baburin


While these books are fantastic places to read about pawn play, they are hard to read if you're just getting started with pawn structures / strategy (where you usually will get overloaded with a ton of information without the kind of context that experienced players have to make sense of all the wonderful things that are said!)

So you might want to get your feet wet with NM Dan Heisman's famous Novice Nook articles which include some very easy-to-read instructional pieces on pawn breaks / weaknesses and more importantly, how weak players misuse their pawns.

Some key articles in this assortment include:


A Positional Primer
Break Moves : Opening Lines to increase mobility
Strategy based on Central Pawn Structure


For added fun, grab a friend and practice Michael Goeller's Pawn Battle mini-game. It teaches you some fairly rudimentary ideas about pawn breaks, breakthrough sacrifices and zugzwang.

Another worthy pay-for resource are chess.com's chess mentor lessons and videos by some excellent GMs/FMs/IMs (especially IM Danny Rensch whose lectures on different pawn structures are very thorough and entertaining)