A fresh restart clears temporary files and applies pending updates. Do it at least once a week.
Use compressed air on vents and fans. Dust buildup is the #1 cause of overheating.
3 copies of your data, on 2 different types of media, with 1 stored offsite or in the cloud.
Yellow or red alerts in Windows Security mean something needs attention. Don't dismiss them.
Wipe down your screen, keyboard, and mouse regularly. Crumbs and dust cause real problems.
If something doesn't look right, don't panic. Jerry can usually sort it out quickly.