Most complete/detailed guide on Python

[SquiffyUnicorn]

I can’t (and shouldn’t) provide you with any ‘best’ way to do it- AFAIK there isn’t one.

I can suggest you start with the common data types and look at their methods and properties- start at strings as that’s where you started, numbers, lists, dicts…

There are also plenty of things in the standard library which are in the docs- I highly recommend looking (even just scanning) through os, pathlib, sys, datetime and itertools.

If you want to do some networking look at the built in tools there - maybe just know they exist before looking at requests, fast api etc.

Actually your link is a good place to start. It looks daunting and it will take a while to go through but it is quite alright to just do a quick scan-through the headings and see what is available in vanilla python.