I have a great eye for detail, lighting and composition. I know I could produce professional quality photos if I learn the techniques, and how to choose the right equipment. Is there enough opportunity in the field to make a living, or does it take a lot of luck and/or knowing people that can get you "in"?

Lots of photographers – a majority actually – work for themselves and freelance. So a great deal is down to your own determination, passion and drive! If you love photography, which it sounds like you do, there’s no reason on earth why you shouldn’t make a successful career of it.

Some of the major areas that freelance photographers work in are:

Portrait – working in your own studio.
Wedding/Event – working with couples, businesses etc.
Fine Art – selling prints/books and holding exhibitions

Other photographers work for people on a contract:

Photojournalism – working for newspapers and magazines etc.
Advertizing – working for ad houses shooting products etc.
(These areas tend to require a degree – but not always)

"Does it take a lot of…knowing people" to get into photography? All businesses are about networking so it should just come with the territory. It’ll start happening before you know it. I worked for a couple of years as a photographer after Uni but now only do bits and pieces because I changed direction. But seriously, once a few people know you offer photography services in your local area the phone calls/emails will come pouring in. In my experience – despite the prevalence of digital cameras, demand is v.high! If you’re polite and ask people to recommend you, word of mouth kicks in.

This is an extensive article on how to become a photographer that might help with your research a bit: http://www.photography-art-cafe.com/how-to-become-a-photographer.html

As for learning the techniques etc, here’s an article with tips for taking digital photography to a higher level: http://www.photography-art-cafe.com/tips-for-taking-digital-photography.html

Hope that helps!
BTW you have some cool pictures in your galleries – keep at it!

Is there any other cool things to do with a dSLR camera that looks "Photo-shopped" besides light graffiti?

You can do custom bokeh like this: http://www.flickr.com/photos/cobrakarin/5218776356/in/faves-vangorkumphotography/ ( http://www.diyphotography.net/diy_create_your_own_bokeh )

Or macro shots where the reflection in the waterdrop is of the background, like this: http://www.flickr.com/photos/12708811@N07/2471065618/in/faves-vangorkumphotography/

You can also do a long exposure at night, and get an effect known as "startrails" http://www.flickr.com/photos/drsoup/4886343833/in/faves-vangorkumphotography/

Or shoot through a glass ball: http://www.flickr.com/photos/brianharris/89066148/in/faves-vangorkumphotography/