This book breaks down complex entertainment rigging (theatre and arena) calculations and makes them easy to understand. It also provides hints for remembering many rigging formulas. It is a great resource for anyone studying for either ETCP rigging exam, and includes an explanation of the equations found on the ETCP Certified Rigger - Formula Table. The third edition has a greatly expanded section on arena rigging, as well as more material and appendices for theatrical rigging. Also, this edition has links to even more free downloads of Excel workbooks for arena rigging. Beginning riggers will find this an excellent textbook and experience riggers will find it as a great reference book.