Resolved Questions on Mechanics

For first time investors, it is difficult to understand the KSE market mechanics, pleas share it here in detail

I was thinking about the campaign mechanics of Starcraft II Heart of Swarm, does anyone know about it?

I was thinking about the campaign mechanics of Starcraft II Wings of Liberty, does anyone know about it?

I was thinking about the campaign mechanics of Starcraft Legacy of the void, does anyone know about it?