@SamC In dating, courses are better than books. 
RSD (Real Social Dynamics) as various users reported, is one of the best groups of coaches in the dating scene.
There are several RSD coaches: Todd (IMO one of the best because is analytical and shows you every step with detail and a high quality reasoning), Max, Owen/Tyler, Madison, Julien, Jeff, and I think there are others.
Some of them have a lot of useful youtube videos. Leo recommends Owen/Tyler older videos (they're not on youtube anymore, so search them on google).
On youtube you can also find these channels:
The Natural Lifestyles Travel Bum Productions Sasha Daygame Austen Summers Other sources:
Eben Pagan/David DeAngelo Mystery Method Mark Manson In the Dating, Relationships, Sexuality section of the forum a lot of useful advice has been given. Enough to satisfy all your questions, I suppose. If you want Leo's advice, you could use the Advanced Search and search for Leo's answers (Search By Author option).