It doesn't come just like that, to be interesting. You have to open minded, and by that I'm not saying believing in everything you find on the internet. Just be curious about a lot of things, from how to repair stuff, to geography, TV series, music , litterature etc.
The more you learn the more you'll be able to have interesting conversations with all sorts of people.
You should also do something with your free time, such as doing some team sports so you can meet new people. Or go out and learn how to dance jazz, and salsa and all that stuff. There are many things you can start doing, and it will all add up to your personnality later on.