The World-wide-web is a great source of information for sailboat racers. The following are just some examples found during a quick search:
The Tactics and Technique of a Duck | Sailing World
Sailboat Racing Tips: Downwind Wind Shadows Explained - YouTube
Sailboat Racing Tips: Pressure vs Shift - YouTube
Sailing Wind Shifts - Lifts & Knocks - Dinghy Racing Strategy - YouTube
Boat Balance: How To Use Sail Camber (Kicker & Outhaul) To Maintain It - YouTube
How to Shape the Mainsail for Beating
Write-ups:
Ladder Rungs: Understand the Race Course with a Visual Approach - SailZing
How to Find Your Speed Mode | Sailing World
Understanding Mainsail Twist | Sailing World
Having the right amount of mainsail twist for Light, Medium or Heavy air is perhaps the single biggest key to upwind boat speed,
Shaping your Sail, Part 1 – Angle of Attack
Shaping your Sail, Part 2 – Camber
Shaping Your Mainsail, Part 3 – Draft Shape and Position
Shaping Your Mainsail, Part 4 - Controlling Twist - SailZing
The Fallacy of Ease, Hike, Trim | Sailing World
Mainsail Telltales: A Better Approach - SailZing
Velocity Made Good (VMG) - Definition and Application - SailZing
Sailing by the Lee: A Primer - SailZing
Rule 18.2 - Giving Mark-Room: Racing Rules of Sailing 2021-2024 - SailZing
Solve Common Pointing Problems: Five Ways to Sail Higher - SailZing
Seeing Wind on the Water - Improve Your Skills - SailZing
Wind Shear and Gradient Effects on Trim & Strategy
MC Scow Sail Trim – Sailmaker Discussion
Starting: ILYA Fast Forward Seminar - SailZing
