The RYA National Sailing Scheme's higher-level modules for small-boat sailing are covered comprehensively in this audiobook. As well as the information for Seamanship Skills, Day Sailing, Sailing with Spinnakers, Performance Sailing, and Start Racing, there is extra detail on dealing with capsizes, trapezing, and foiling.
Following on from the audiobook RYA Start Sailing, RYA Advanced Sailing will help you succeed on any pathway you choose to follow.