Garry there is no "set schedule" for videos.  Also, not all are hour long videos.

That being said, in the last 10 days or so there was:
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Project Budget
Week of Year
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What Scott said. There is no set schedule. I try to release at least one video every day, and one TechHelp per week, but that might not happen every week. Some weeks you get three. Honestly Project Budgets was scheduled for the 22nd, but I accidentally released it early on the 14th.