These resources will help you with convention card and bidding system decisions.
Bidding Systems and Trade-Offs
Conventions: Lebensohl 2NT Response
Conventions: New Minor Forcing (including XYZ)
The following resources are arranged according to the sequence of the traditional ACBL Convention Card
Convention Card Decisions for The Real World: General Approach
Convention Card Decisions for The Real World: Notrump Opening Bids
Convention Card Decisions for The Real World: Major Openings
Convention Card Decisions for The Real World: Minor Openings
Convention Card Decisions for The Real World: Two-Level Openings (Weak Two Bids)
Convention Card Decisions for The Real World: Other Conventional Calls
Convention Card Decisions for The Real World: Special Doubles
Convention Card Decisions for The Real World: Defense vs Notrump
Convention Card Decisions for The Real World: Versus Opening Preempts
Convention Card Decisions for The Real World: Slam Conventions
Convention Card Decisions for The Real World: Leads and Carding