You can find here all the leaflets of the LEGO Minifigures Collectible Series, in a kind of Minifigures Series Guide.
LEGO Marvel Minifigures Series 2 Weight Guide, and correcting other identification myths - Jay's Brick Blog
The Minifigure Collector: Lego Minifigure Series 1 -19, Ninjago Movie, Batman Movie Series 1 and 2, Lego Movie, Simpson, Disney, Harry Potter, DC Superheroes - Checklists and Visual Guides
Guide
LEGO Minifigures CHECKLIST - Choose Your Series list
Collectible Minifigure Series Guide
Review: LEGO Minifigures Series 24 - Jay's Brick Blog
The LEGO Movie 2 Collectible Minifigures 71023 Feel Guide [Review] - The Brothers Brick
Collectible Minifigure Series Guide
Possible Way of Figuring Out LEGO Marvel Studios Collectible Minifigures Series 2 (71039) Characters - The Brick Fan
LEGO Collectible Minifigures 71026 DC Super Heroes Feel Guide [Review] - The Brothers Brick