Although I do not know much about what cities to go looking in, I would suggest a place like deviantart.com to set up a portfolio, also within that website, is a forum dedicated to freelance graphics designers. You could always start off doign freelance stuff to get an idea of how the industry seems to run.
THen again, it depends on what sort of graphics design... Doing a multimedia based course like stevealmighty said is good if you want to learn the basics of all the the editing programs. I am on a multimedia course, and I've learnt how to use many types of cameras, photoshop, after effects, illustrator, logic, reason, audition etc..
(Edit: And on the mac subject, at uni, we ALL use macs for editing, whether it be graphics or audio, so I would suggest you learn the ways of a mac, as that is most likely the workstation you will be using in the professional industry)
I know of one top end job in the industry which is a special effects supervisor (or something similar) and he/she can earn upto £120,000 pa (pounds, not dollars) and then there are other jobs where designers earn £15,000 pa.. So the scope of salaries/location/position depends so much on your expertise, amount of time in the industry, contacts and experience. It is a very hard industry, in my opinion, to be at the top, or earning a nice salary... But thats just my 2 pence worht...
Edited by dark messenger, 04 March 2009 - 12:45 PM.