I've looked at the wiki, but I need further explanation on some of the uses http services can do. Any help please? Thank you!
HttpService is primarily used to interact with a web server/website.
HttpService allows you to GET and POST data.
GET consists of geting data.
POST consists of posting data.
You have most likely heard of an web api.
Some allow you to get the userId of a player with the only information you have is his name and vice versa. Others enable you to get certain stats such as the forum posts of the player.
Unless you are planning to gather data from the game to save onto your own database, you will most likely use GET.
Some user created web apis can be found here!
Information on sending http requests can be found here.