Congrats on hanging your shingle, Murray!
Marketing is my favorite part of running a photography business, just behind the art itself.
Your most effective combo will always be your business card + your web site. This is your cheap, easy, fast ticket to professional appearance and respect.
Beyond that, a plethora of marketing opportunities exist. I would suggest picking up a good beginner's marketing book, such as Duct Tape Marketing by John Jantsch, and/or check out his web site at
http://www.ducttapemarketing.com/. All sound, solid advice for any small business, especially within the blog (
http://www.ducttapemarketing.com/blog/). Follow good foundational and advanced advice like you will read there and you will rise head and shoulders above the majority of your competition.