The book on Amazon
here.

This book is the classic, definitive text on the technical aspects
of hang gliding. Covering such topics as aerodynamics, stability and control,
structure, performance and glide calculations (including performance in a turn),
the physics of landing, slope and thermal soaring, the book translates
aeronautical engineering into practical insights from a hang glider pilot's
point of view.

Written in a conversational style, the book explains all the important messages
in simple rules-of-thumb for those who don't want to get into the
technicalities. However, the book does not run away from algebra: there are
plenty of equations and graphs for those who want to look at the detail behind
the rules-of-thumb. The Kindle edition also includes performance charts for
rigid wing hang gliders.

Finbar says that he discusses landings.