How to setup Frappe framework to contribute?

Hello

I found may guide to setup the Frappe framework / ERPNext but I am looking for a contribution guide. How to setup a bench and frappe framework for contribution.

Any anyone suggest me where to start?

The fastest and most reliable way is to use Docker images: https://github.com/frappe/frappe_docker/blob/main/docs/development.md

Alternate is bare metal setup: Installation