Create a GitHub account, if you don't already have one. Need help? Here are some resources to help you set up your GitHub account:
Register for Hacktoberfest: Navigate to the Hacktoberfest registration page and follow the instructions. But, read the rules carefully before you do and then sign In using your GitHub credentials.
Download and Install GitHub Desktop
Fork this Repository or Any other repository with the tag "hacktoberfest"
Clone that (Forked) repository to your local storage
Create new branch
Add your changes
Commit your changes
Push your changes
Create Pull Request
Wait and Move on to the next Repository!
Enjoy Hacking!