how can I watch tv on my pc ?

I hear watching tv on a computer is the thing nowadays.People are leaving the cable behind. I'd like to do the same,but don't know mucch about it. Any help will be appreciated. I don't care if its full blown cable , just some will be ok with me.

It depends. If you want high quality programming, you will have to use a paid service like Netflix or Hulu.
If you don't care for it to be in 720p, then you can use a third party site that allows you to watch shows. The quality isn't great but good enough to watch. I don't know the rules here so I won't share any sites publicly.

I ALWAYS watch my favorite animes on PC, especially some of the bigger named anime sites. 

Like what @Chosen1?

Eureka 7, uh the... oh Bleach, um the one show that has Luffy - is it One Piece... Yeah, those are the main ones...

Lol Eureka 7... I remember that around the same time as Fruits Basket... I like Skip Beat a whole lot!

Skip Beat is pretty cool... Don't know about Eureka 7, I didn't like it with the couple of episodes I watched. Of course, I like Naruto the most, followed by Kingdom Hearts (game).