otaku: is a Japanese term used to refer to people with obsessive interest particularly (but not limited to) anime, manga, or Japanese video games.
as sourced from the everlasting wikipedia, the most helpful site on the Internet since the Internet!
^Ripped off from the Internet as well!^
But considering that I'm calling this the otaku handbook i believe i should at least know what I'm talking right? anyone? please tell em I'm right? just forget it!
I'm right and I know I'm right! Because I'm awesome! and epic, and all around cool. Not really. But it's my blog and i can do what i want.
Now that i\I've gotten that rant out of the way let's delve deeper the the different categories of an otaku (yes there are categories just like there are for any other label). There not categories but negative and positive aspect of the word. To actual people who are just obsessed about something the positive annotation can be simple as in saying " I'm a car-otaku" to things like " he's such an otaku or stalker!"
In hindsight to normal mainstream media, and by media I'm keeping Japanese people out of this, its a pretty normal term to refer to a obessey but in Japan it can lean towards a term for outcasts or weirdos (and not the good type!).