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Computer Hardware

These resources are public, free and a great start. Yes I know some of them are just Wikipedia, but it's a good place to start so get on with it :-)

Topic Resource Name Link
CPU Wikipedia Central processing unit
RAM Wikipedia Random-access memory
HDD Wikipedia Hard disk drive
SSD Wikipedia Solid-state drive
NIC Wikipedia Network interface controller
GPU Wikipedia Graphics card

Online Videos

These online videos expand on or replace the above resources if video is your preferred medium.

Topic Resource Location Link
All components YouTube ("Basics Explained, H3Vtux") What does what in your computer? Computer parts Explained
CPU YouTube ("In One Lesson") How a CPU Works
RAM YouTube ("PowerCert Animated Videos") RAM Explained - Random Access Memory
HDD YouTube ("Basics Explained, H3Vtux") How Do Hard Drives Work?
SSD YouTube ("Branch Education") How do SSDs Work? How does your Smartphone store data? Insanely Complex Nanoscopic Structures!
NIC YouTube ("Ace Networker") NIC (Network Interface Card)
GPU YouTube ("Basics Explained, H3Vtux") How does a graphics card work? GPUs and Graphics cards explained.

Certifications

Note

This isn't required and is probably not a recommended use of your time. It's simply an option.

If you're looking to get certificate in computer hardware then consider the CompTIA A+.