Hi,
I have read a lot of documentation and books where they explain the general functioning of Bitcoin and I think that the time has come to study the source code of Bitcoin core.
I have knowledge of c++ and python but due to the large size of the project and the number of files, I don't know where it would be correct to start.
Could someone help me on how to properly perform that task?
Speaking as somebody who has tinkered with the C++ codebase a few times, I find a good way to learn it is to first look in the
test directory, and run some of the tests individually, try them with different inputs, etc.
All the tests for most of the core protocol stuff are in here - scripts, base58, transaction, etc. So you can relate the core data structures back to all the books you've read on the topic.
It's not the easiest code base to understand, I find it's helpful to use an IDE with a bookmarking facility so you can "map out" the important parts.
Good luck!