Let's centralize best learning/practicing resources by technology

Hi everyone,

Now-days, with all this abundance of learning materials, so many websites with courses, such as Udemy, EdX, etc. and so many materials being marketed as the best or supported by fake reviews, it is so hard pick the source to learn from. Option paralysis. Same goes for practicing, there are many individuals that give great exercises alongside their training materials (which can't be found on the big websites). But it's hard to find them unless recommended by someone.

With that being said, I am looking to aggregate on some github page great courses and exercises grouped by technology (C, Node.js, Reverse Engineering, Networking, etc.).

With that being said, please share any material that you really enjoyed and feel it's worth sharing.