A couple of great resources here also:
https://www.summitmt.com/cnc-machining/
https://www.summitmt.com/cnc-operator/
There are several online resources that help with machining in general. Obviously CNC Zone is huge, which was credited. Here are just a few.
CNC Machining Resources
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A couple of great resources here also:
https://www.summitmt.com/cnc-machining/
https://www.summitmt.com/cnc-operator/