This is an optional but highly encourage exercise. If you don't have access to Linode Object Storage you can configure any other compatible remote backend.
New S3 Bucket
In Linode setup an Object Storage (S3) bucket to store the state file.
API Access
If you don't have the necessary access credentials follow the instructions in the Linode API Requirements section.
Configure
Configure Terraform to store the state file in the remote backend.
Init
Run terraform init --reconfigure to apply the new backend configuration.
Commit
Commit your changes and push them to GitHub.