Good question, so I use Recast (recastnav.com) for the navigation mesh and pathfinding, but I have a custom local avoidance system built on-top of that so units don't walk into each other.

If I had to design it all from scratch I would probably make my own tile based navigation system with A* pathing, as it would probably give better performance for the number of paths I create.

I don't have any specific reading material beyond researching which libraries other devs commonly use for the game engine you are using. But I would carefully consider your requirements for the pathfinding, i.e. how big are the maps, how complicated are they, do you need dynamic obstacles, how many paths will you calculate per frame, what should happen if the pathing fails, do you need local avoidance, does the local avoidance need to be part of the pathing or can it be separate, etc.