Quick Reference

Action	How-To
Stage	Source Control (+)
Commit	Type msg + ✔
View Diff	Click file in Source Control
Discard	Right-click file in Source Control → Discard Changes
Branch	Bottom-left status bar
Sync	Sync Changes button in Source Control (appears after you commit)

Where is Sync Changes? After you commit, the Sync Changes button appears in the Source Control panel (it may be blue or green, or say Publish Branch). Clicking it uploads your commits to GitHub so they are visible in the online repository.