This is my first year in the biz also and of my 12 weekly lawn accounts 6 have come from Craigslist and the other 6 by word of mouth. Craigslist is free and can be a successful form of advertising if you write a good ad and don't over post. I would hit craigslist with a few different ads once or twice a week.
I will quote a job a little lower just because I want to get my name out there and get in good with some people.
MOST IMPORTANT...Do quality work and people will notice! Quality work at a reasonable price always works!