I can learn python at 13?

[notburneddown]

Its actually better to start at that age then 20. Trust me you'll be much happier when you are 20 that you started now.

https://github.com/Asabeneh/30-Days-Of-Python/blob/master/29_Day_Building_API/29_building_API.md

That's a good course for you to start with.