If you are looking for a comprehensive tutorial about using MongoDB in Python, someone who will help you understand and gauge the quality of the code you found on StackOverflow, then you should take a look at MongoDB with Python Crash Course – Tutorial for Beginners on YouTube. If you expand the description on the video, you can see the link to the code on GitHub, timestamps for each section of the tutorial for the impatient ones like me, and much more.
My recommendation would be to subscribe to FreeCodeCamp.org’s YouTube channel if you want to learn programming and are looking for quality, free resources.
Mundane Beauty 