Check in the files changed, and commit them back to the dev branch
Push the changes to Github origin
Wait 10 seconds for Netlify to complete the build, and your changes are live on your TEST site!
This assumes you've setup a persistent TEST environment, discussed under advanced install notes in the setup guide. This is useful primarily if you want your clients to be able to review TEST changes before you bring your changes to PROD.
Deploying to PROD
Deployments to PROD are done within Github
Do a PR from to merge the changes from the dev branch to main
Merge the PR
Wait 10 seconds for Netlify to complete the build, and your changes are live on your production site!