You can start with https://github.com/nostr-protocol/nips 🤙

Learn about websockets and coding a simple client

https://www.fullstackpython.com/websockets.html

A python lib for nostr

https://github.com/jeffthibault/python-nostr

For a lightning lottery like bot you would also need a payment processor integration.

You can try ZBD as it’s fairly easy to get started

https://zebedee.io/developers/dashboard

Perhaps it would be a good idea to add a more comprehensive, building on nostr guide resource 🤙