Agree with Chris a free course can only benefit (whilst there hand out some business cards)
Also local advertising is a reasonably cheap short term option but depends on competition etc, Yellow pages didn't bring me a whole shed-load of calls or work (but then they did manage to include spelling errors & missed vital text even after I had pointed this out on the proof
)
I would post some flyers, go into local estate & letting agents, pester local builders, shop fitters, kitchen fitters etc Or if you are industrial contact local companies & offer your fault finding, maintenance & call out skills (at apremium of course)
Most important don't miss opportunities~ I have kicked myself on a number of occasions (& still do)
Lastly consider a web site when you are more established.
Good luck sparked out.