This is a practical video on computer maintenance and safety.
Never take apart a power supply, and never take apart a CRT monitor unless you know what you’re doing. The video discusses the use of an ESD wrist strap and antistatic surfaces to place your computer parts. It also describes using compressed air versus air from a compressor, and using a UPS to make sure your computer has power in the event of a power failure. A Uninterruptible Power Supply’s battery will likely need to be changed every couple of years.