I am a huge fan of education, especially dynamic, online content from MOOCs that are based upon the student’s availability, not an organization’s schedule.
Some of the best (and more importantly, ongoing) results that I’ve had are with:
- PyImageSearch articles and its reciprocal course, PyImageSearch Gurus.
- Free Code Camp
- Linux Academy
- A Cloud Guru
- The Odin Project
- Hack The Box
- Amazon’s Machine Learning University