Sorrells provides a very good overview of various aspects of longbow technique and hunting. He covers topics ranging from tuning a longbow and its arrows to advice for bowhunting and woodsmanship. He offers a lot of good advice to beginner archers and overall, I'd recommend this to someone interested in getting into archery.
Guide to the Longbow is a comprehensive book about traditional archery that presents strictly informational text to the budding archer with a no-nonsense approach. Following the author's advice about shooting will undoubtedly make you a good archer, thought it may not be the most fun approach for everyone. If you read e-books this one is a treat - there isn't a better formatted e-book out there.