I have a very general question.
How to study the technical aspects of Bitcoin. 
I know already a lot. I have read the book "Mastering Bitcoin", wrote a small program to send a version message, designed a website to print paper-wallets and last but not least graduated in Scientific Computing with my Bachelor's Thesis in Bitcoin.
Now, today I was thinking about enrolling at The University of Nicosia in the graduate Program: Master in Digital Currency. But!
About 11500 € (5BTC) in costs. And if this is not enough I have to submit this certificate and that certificate. And then the courses: Only four courses about the technical aspects. The rest bla bla (e.g.
regulation and taxes of crytocurrencies or the banking world and cryptocurrencies). I don't want to spend my money on this shit. Not 5 BTC.
Then I proceeded duckducking and found the "Blockchain University". A lot of strange videos clips on YouTube, not really educational. No possibility to enroll as an online course.
There is the Khan Academy with a bunch of videos with the basics of Blockchain and thats it.
My dream is to fully understand the inner workings of Bitcoin (like a Core developer does) and to maybe invent some improvements. I have some small projects and will learn by solving them (e.g. program Blockexplorer, Headermessage, ...).
But is there any good educational material or an organisation to help me in this task?
