Check this site out for convention backup.

With only 15 words allowed during an auction and just 13 cards in each suit, bridge players have invented dozens of special bids, called conventions, to describe their strength and hand patterns. These descriptions are from the ACBL Bridge Bulletin series called the Bidding Toolkit. The ACBL textbooks Commonly Used Conventions and More Commonly Used Conventions contain detailed chapters on the use of many of today’s popular treatments.

A PDF file to help you fill out a Convention Card.

The official American Contract Bridge League site.

Bridge association wherein the members of the American Bridge Association are committed to fostering an environment that stimulates competitive card play, while respecting the basic worth of each participant at every level of performance.

Alphabetic list, with links, to almost every PERSONAL BRIDGE site on-line.  A great resource!

Another good general bridge reference site.

A place to go to look up Bridge Conventions and to see a little "bridge humor"!

Website offers free Bridge Newsletters via EMAIL to you.  If you are a social Contract Rubber Bridge or Duplicate Bridge tourney player, you can view popular instructional Bridge blog video lessons, check out their free Bridge Encyclopedia that is full of easy to read and understand articles and Indexes.  See Bridge Conventions, Bidding, Play, Bridge Systems, Jargon, Bridge Laws complete with Tech Files and Duplicate Bridge Decisions.

Learn bridge! No Fear Bridge is the most fun way to learn bridge The website for learners.

The member's site is packed with online learning activities for bridge beginners, improvers and advancers.

Provides information on Bidding Conventions.