Disable App Update Notifications in Android

Problem: You have billions of apps installed on your Andoid phone & they're all set to "Update Automatically," which results in your notification bar being filled to the brim with update notifications.

Solution: "Play Store" app > Menu softkey (on phone) > Settings > uncheck "Notifications"

Not Syncing Calendar after Jelly Bean Update

Problem: You just upgraded your Galaxy S3 to Jelly Bean and synced your Google account, and your Calendar entries are missing.

Solution: Go to Calendar → Click on "Calendars" (top center) → Check all the calendars you want → click "Done" (top R)