MASS MEDIA

Information is very important in our lives. Mass media tries to keep people informed about what is happening in our city and all around the world.

Several years ago, newspapers started to inform the citizens. People could buy a newspaper and read whatever they were interested in. Then the radio appeared, and you could get information by listening to some broadcasts. And later, the television enabled us to be informed in a better way. Television is really popular. You can find a television in each house of the world.

These three types of media used one-way communication but then the Internet and social networks were created. The Internet gives people the opportunity to spread their own thoughts and share their opinions. You can owe(host?) a video channel, a blog or a radio show, and you can even do it using your cell phone.

The Internet supposes(offers/provides?) an advantage, although every now and then we waste a lot of time reading things about people who actually we do not know. We should meet friends and relatives, and stay in touch with them not only over the Internet.

The Media are evolving quickly and the amount of social networking users is increasing. Therefore we must get used to using the new media and be aware about future changes.

MASS MEDIA

Information is very important in our lives. Mass media try to keep people informed about what is happening in our city and all around the world.

Several Many years ago, newspapers started to inform the citizens. People could buy a newspaper and read whatever they were interested in. Then the radio appeared, and you could get information by listening to some broadcasts. And later, the television enabled us to be informed in a better way. Television is really popular, you can find a television in each house of the world (or in every house in the world).

These three mass media used one-way communication but then it was created the internet and social networks were created. The internet gives people the opportunity to spread their own thoughts and share their opinions. You can owe own a video channel, a blog or a radio show, and you can even do it using your cell phone.

The internet supposes provides an advantage although every now and then we waste a lot of time reading things about people who we actually we do not know. We should meet friends and relatives, and stay in touch with them not only just on the internet.

The media are evolving quickly and the amount of social network's users is increasing. Therefore we must get used to use using the new media and be aware about future changes.

Great job Salva! My corrections are in red and my suggestions to sound more natural are in blue/grey. 

Mass media is the plural of mass medium, therefore "mass media try..." is correct.

"Several" is normally used to describe a number greater than 2 but less than "many". There is no exact rule, but I would normally use "several" for no more than 10 or 12. As newspapers have been printed for over 100 years, it's better to say "many". So, for example:

Newspapers have been around for many years.

Twitter has been around for several years.

I'm not sure if you meant "own" a video channel or if you meant something else (e.g. publish a video channel, blog, etc.).