REMINDER - COVID-19
Any content, information, or advice found on social media platforms and the wider Internet, including forums such as YBW, should NOT be acted upon unless checked against a reliable, authoritative source, and re-checked, particularly where personal health and liberty is at stake. Seek professional advice/confirmation before acting on such at all times.
Users who are found to promulgate FAKE NEWS on the forum in regard to this issue, intentional or otherwise, may find their access terminated. It is your responsibility to provide references to bona fide sources.
FAKE NEWS, in this regard, is that which is posited by organisations, media, etc., that is repeated on the forum, or used to support personal opinion/hypothesis posted by users - FAKE NEWS is not necessarily the personal opinion/hypothesis being posted in itself, any issues with such should be challenged respectfully.
IN ADDITION it seems that conspiracy theories are finding their way onto the forum. This is not the place for such content. Users who post it may find their access limited or permanently suspended. Please leave it where you find it.
When I bought my first dinghy I also bought this...............
Since you haven't had many answers, I'd suggest any of the RYA books, which generally contain very good diagrams. I'd also recommend Sailing for Dummies if you are a complete novice. Best to identify whether you are dinghy sailing or yacht cruising - while the fundamentals are the same, there are subtle differences.