Understanding the many uses of doubles can dramatically improve your game.Includes Takeout double, responding to the takeout double, rebids, balancing and other doubles.
Bridge at a Glance
Bridge Basics 1: An Introduction
Bridge Basics 3: Popular Conventions
Bridge Basics 2: Competitive Bidding, Vol. 2
Bidding in the 21st Century
Improving Your Judgment 1: Opening the Bidding