Greg Vanden Berge has been a licensed General Building Contractor in the state of California for over 25 years. He's been involved with large projects, involving hundreds of workers and even worked on plenty of projects, by himself.
Greg got his contractor's license when he was only 25 years old and it's literally been a rough and bumpy road, to success. If you don't mind learning things the hard way, don't purchase this book, because it will make your life, a little easier.
Thanks in advance and I guarantee that you won't be disappointed.