A Nice girl, who doesn't hang out with the cool girls and maybe have more boy friends, she loves Sci-Fi, Superheroes and Video Games. Maybe also books and computers. She can be a bit shy, but is mostly really nice.
The quiet girl in the back of the class, who secretly goes home and plays Skyrim, but is to shy to tell anyone. That's a dorky girl!
Darkly inclined refers to someone who follows a darker or spookier lifestyle, but isn't necessarily goth. Interests can include Tim Burton, Gothic literature or anything that creates a darker atmosphere, Halloween, music of a generally darker style and dressing alternative/darker fashion styles. Members of other subcultures can be darkly inclined, like metalheads.
Goth pertains to someone who listens to goth music, including genres such as goth rock, death rock, post-punk, gothabilly, cold wave and dark wave (e.g. ethereal wave and neoclassical). It does not describe "anyone dark", it has a specific definition.
Goths can be darkly inclined, but it's not a requirement by definition of the subculture. Some darkly inclined people can even discover goth music and become part of the subculture, too. It doesn't always have to work hand in hand, but it can.
A book written by Philip K. Dick, that was later turned into an animated movie of the same name. Follows the story of a undercover drug detective who ends up getting hooked on the drugs he's fighting. His sacrifice, however, uncovers the terrible truth about an agency that provides drug addicts safe-houses to get off the drug. Fantastic book and great movie. The book is better though. The story was inspired by the 1970s drug culture that Dick participated in. It's dedicated to dozens of his friends that died or were crippled by drug use.
A scanner darkly is a freaky story, makes drugssound very unappealing.