Facebook.com was a website founded by Mark Zakarburg in 2005. Initilly facebook was not facebook actully facebook was named as hot or not where people used to share theire pic and get reply from theire friends that they are looking nice or not.
After the incresing popuralirity Mark named it facebook where poeple can share theire pic and chat too.
Now facebook has bilions of users all over the world. This may be not query that today every child and adult know what is facebook and how to use it.
MY experience with facebook is very good. I am using it from 2014.
Few people know that you can use facebook to make money.