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Udemy continues to offer a selection of online courses for free. Each course includes hours of content, and most are by far the best deals we could find for such classes. Here are a few interesting ones:

Become an Android Developer from Scratch for free

Create Free, Fast and Secure Static Website for free

Digital Currency - 5 Reasons People Fail and 5 Solutions for free

Salesforce 101: Introduction to Salesforce for free