This is a list of resources and challenges to learn python programming and OSINT for CTF's.
Learn Python
Executing Shell Commands with Python
OSINT Introduction
List of OSINT Tools
All OSINT Resources
Some list of writeups to help you better understand.
CSI CTF
Hacktober CTF
Trend Micro CTF
CTFlearn
TryHackMe OSINT challenges 1
TryHackMe OSINT challenges 2
TryHackMe OSINT challenges 3
TryHackMe OSINT challenges 4
TryHackMe OSINT challenges 5
Search "osint" on TryHackMe for more challenges