I found a couple of cool resources today, they are nothing new but quite interesting.
The first one is the Microsoft Skills Assessment here you can look to see how well you know all types of developer topics. The second is Microsoft Learning Resources you will find all types of free training content here, the content is all normal Microsoft Official Curriculum. You can also read many books online for free from here are well.
Disclaimer The opinions expressed herein are my own personal opinions and do not represent my employer's view in anyway.