WHAT ARE SOCIAL NETWORKS?
Social networks are a social structure that can be represented in the form of one or several graphs, in which the nodes represent individuals (sometimes called actors) and the edges represent relationships between them.

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 MAIN SOCIAL NETWORKS:
Twitter: This social platform is a two-way communication service with which you can share information of various kinds in a fast, simple and free way.

Instagram: Instagram is a very popular social network among young people that offers the possibility of sharing photos with other users and being able to receive comments or “likes” from your followers.

Facebook: Facebook is the main social network that exists in the world. A network of virtual links, whose main objective is to support the production and sharing of content. It came to expand the possibilities of social relationships and caused a significant revolution in the world of communications.

YouTube: ​YouTube is a website that allows its users to upload videos so that others can consume them at any time and online. Actually, it is a kind of television on demand over the Internet. But in this network you can not only view professional content, but also from any type of user.

Whatsapp: WhatsApp is a free app2 and offers messaging and calling in a simple, secure and reliable way, and is available on phones everywhere in the world. And yes, the name WhatsApp is a pun on the phrase What's Up in the English language which means "What's new?".

Tiktok: TikTok is an application that allows you to create and share short videos: from 3 to 15 seconds or from 30 to 60 seconds. It was created by the Chinese company ByteDance in 2016. It was first launched in China, under the name Douyin, and the following year, to the rest of the world under the name TikTok.

Snapchat: Snapchat is a popular messaging app that allows users to exchange images and videos (called snaps) that "disappear" after they're viewed.