kywoman93,
1. Locate the HDMI port on your computer.
2. Insert one end of the appropriate length HDMI cable in to your computer and the other end in to your HDMI capable TV.
https://www.amazon.com/AmazonBasics-High-Speed-HDMI-Cable-Standard/dp/B014I8SSD0
3. You can either choose "clone" or extend".
If you have Windows 10, then you press and hold the Windows key, and then tap the letter P.
Or you can follow instructions below for either "Extend" or "Clone"
http://www.intel.com/content/www/us/en/support/graphics-drivers/000005580.html
(It's easier to just use the Windows key + P)
Edit: On some computers, it will just automatically display to your TV after you insert the HDMI cable. It's just a matter of plugging in the HDMI cable.