The ul tag stands for unordered list. An ul is putting bullut points on your website.
The ol tag is the oposite of the ul tag. Ol stands for ordered list. Ol makes numbered lists on your website.
li stands for list item. You put the li inside of the ul or ol tags like this:
The img tag stands for image. You use this tag to put images on your page. To insert in img, you right click on the image that you want and click copy image address. In the src section hit control v (on Chromebook, Windows, and Dell) or command v (on Macs).