House Building Educational Resources

[Bryan Normal]

Can anyone recommend detailed references for getting into spec home building and development? Looking for books, websites, and/or YouTube Channels that aren't complete "guru fluff", that get into the actual nuts and bolts of the business. I currently have been flipping houses for a few years, taking on pretty extensive rehabs and using contractors/ permits as needed, and getting my builders license soon. Looking to think ahead on future business options here for spec homes. Thanks!