Start with machine code https://en.wikibooks.org/wiki/A-level_Computing/AQA/Computer_Components,_The_Stored_Program_Concept_and_the_Internet/Machine_Level_Architecture/Machine_code_and_processor_instruction_set
Then I think this one is helpful
http://davidederosa.com/basic-blockchain-programming/bitcoin-script-language-part-one/
http://davidederosa.com/basic-blockchain-programming/bitcoin-script-language-part-two/
Topic: Is there a newbie friendly source for learning bitcoin scripting (Read 776 times)
I wanted to start learning more about how the "Scripting System in Bitcoin" works and it would be great if I had some easier source than the source code which is in C++[1] 
or the wiki[2]. So if you have any good sources with easy explanations please introduce me to them.
P.S. Bitcoin Script for dummies[3] doesn't work anymore (DNS problem?)
[1] https://github.com/bitcoin/bitcoin/blob/master/src/script/interpreter.cpp
[2] https://en.bitcoin.it/wiki/Script
[3] https://www.cs.princeton.edu/~tongbinw/bitcoinIDE/build/editor.html
or the wiki[2]. So if you have any good sources with easy explanations please introduce me to them.P.S. Bitcoin Script for dummies[3] doesn't work anymore (DNS problem?)
[1] https://github.com/bitcoin/bitcoin/blob/master/src/script/interpreter.cpp
[2] https://en.bitcoin.it/wiki/Script
[3] https://www.cs.princeton.edu/~tongbinw/bitcoinIDE/build/editor.html
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