A proxy is like a middleman that can help you access the internet. It can be used to access websites or other services on the internet without anyone knowing who you are or where you're from.
A HTTP proxy is a special type of a proxy that can only be used to access websites through the Hypertext Transfer Protocol (HTTP). It acts as a gateway between you and the website you are trying to access. When you go to a website through a HTTP proxy, it first checks to see if the website you want to access is allowed. If it's allowed, it will send the website's data back to you so that you can view it in your browser.
In other words, if you have a HTTP proxy, you can access websites without revealing your identity and without anyone knowing where you are coming from. This can be useful if you want to keep your online activity more private.