For contributors implementing features or bug fixes:
$ ./dev-setup.sh
See here for specification and documentation of inbound APIs.
For new admins or developers, or those with new workstations: docs/development/environment-setup.md
For admins and developers new with scratch orgs and git: docs/development/dev-tips.md
For the release manager or the repo admin: docs/development/cicd.md
For the System Administrator renewing SSL client certificates: docs/development/certificates.md