Meaning 1
A playbook is used in football; it describes moves on the football field for the team and coaches. They need to study the playbook before a game.
Sentence 1
All players are expected to memorize the plays in this new playbook for the season.
Meaning 2
A playbook can and often is used in a political campaign.
Sentence 2
This playbook, by our political consultants, is for the 2014 legislative campaign. It describes the strategy for the campaign, play by play.