[D] Approaches to new code: create a map of the code structure, does it make sense?

Most of the time, when I try to implement (and understand) a new code on GitHub I feel overwhelmed by the complexity of it. In my opinion, one of the hardest part is trying to understand its structure and how it works.

When you are facing this issue, what is your *modus operandi?* Does it make sense to produce a map of the code structure? Does it make sense to spend a bit of time to create it while digging …

code machinelearning map sense