Should I believe it?

As an ordinary college student, I seldom watch news or read any newspapers. Maybe because of my packed daily schedule that occupied with class and activities. So, I take the alternative ways to know the latest issues by reading the online newspapers or scrolling through people's tweets on Twitter. They give me much info though. I even get the news faster than watching news and read the newspapers. But, the only problem is the truth. Do you guys believe every single detail that they wrote on the online news? Do you believe every single video that people post on the YouTube? For me, i'll believe it if I thought that it looks really real and convinces me to believe it for sometimes. But then, I'll get the various versions of the stories that I heard of and that will make me confuse. For an example, I've watched a video on the internet about this huge riot happened in Malaysia. A few weeks later, the news on TV telling the people that the video was a fake video. So which one am I supposed to believe? That's the main problem. People tend to spread the propaganda on the net and blur our vision by convincing us that it was true. But, sometimes, the net can be trusted. But not every time. Only for certain occasions and situations. We can't anticipate people's perception. Everybody comes out with their own version of stories. It is just like listening to people's stories and you can't even deny them and just keep listening all over again. Other than that, trolling people is one of the current trend on the net. For those who seldom surfing the net, they might believes all those hoax and propaganda. So my little advice here, don't rely too much on the net. Sometimes you need real people to tell you the real story.