After an absence of almost a year, the GameMasterOnline.com site is being revived, but it will take a while.
If you are looking for the free Blackjack School, the latest version is posted at BlackjackInfo.com:
Visit the Blackjack School at BlackjackInfo.com
Or you can visit the home page there: BlackjackInfo.com
What happened to the original GameMaster, Bill Channels? Read the latest information I have at https://www.blackjackinfo.com/gamemaster/. If you have further information about the current status of Bill, please reply there. Many of his fans continue to ask about him.