Cats shed more in the spring. Generally a true statement. Maine Coons shed enough fur to make another Maine Coon.
Based on observation . . .
Most common place for largest mats — along the side of body.
Most common place for smaller mats — behind ears, under chin.
Tools to use: rakes, metal combs, slicker brushes, and other tools reaching to the skin, not just skimming surface.
How often to comb/brush: Daily until shedding season is over.
How to know when shedding season is over: Less fur removed than during previous brushings/combings.
For your de-shedding toolkit . . . many types of rakes and slicker brushes will work.
Slicker brush: Four Paws Magic Coat Gentle Slicker Wire Brush for Cats