What an excellent 500 lines introduction to the byterun bytecode interpreter / virtual machine: <a href="https://github.com/nedbat/byterun" rel="nofollow">https://github.com/nedbat/byterun</a><p>Also, proceeds from optional purchases of the AOSA books go to Amnesty International.
<a href="https://aosabook.org/" rel="nofollow">https://aosabook.org/</a>