First thing: grammAr, not grammer.
Here's my rewrite. A couple of times I sensed you hadn't fully grasped the meanings of some words you chose.
''One of the principal advantages of using the internet, mobile phones or any other kind of portable networking device is that you are able to acquire a massive amount of information, such as news, business information, technological knowledge, historical documents or anything else you would ever need."
...not to mention the latest goss! :)