GitHub Learning Lab - https://github.com/apps/github-learning-lab

Introduction to GitHub - https://github.com/skills/introduction-to-github

GitHub Skills - https://skills.github.com/

Connecting to GitHub with SSH - https://help.github.com/en/github/authenticating-to-github/connecting-to-github-with-ssh

Personal Access Tokens - https://help.github.com/en/github/authenticating-to-github/creating-a-personal-access-token-for-the-command-line

Managing Access: https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/managing-repository-settings/managing-teams-and-people-with-access-to-your-repository

How to Submit a Ticket - https://help.github.com/en/github/working-with-github-support/submitting-a-ticket#submitting-a-ticket-using-the-github-support-portal

Support Portal (Submission Form) - https://support.github.com/contact