[Ned Milburn]

Best I can say about learning bracing design is to see as many guitars as you can and as many different bracing designs as you can. Look for weaknesses in guitars (warps and cracks) then use your understanding to assess why certain guitars crack and warp, while others don't. Also, assess why certain guitars sound good and others don't. A book will only give you ideas to think about but the only real answers are in your experience of seeing, hearing, and doing.