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.
There's not much of "advanced" here. I'm far from an expert but all the concepts exposed were easy to understand and not at all complicated. Some important ones are just touched, without any depth. I would have expected to be a more thorough manual, especially in explaining seamanship skills, the effect of the winds and in rules of navigation (there's barely anything about them).
Most of all, I've disliked the jumping from a topic to another, without any connection and apparently without any logic. In 5 pages it's possible to go from buoyancy to tides to sailing with a spinnaker, without apparent reason as to why choosing this order. It feels like much editing is still needed