Twitter marketing will be very much effective for you. What you need to do is, know the basics and insights of twitter for your better use. From customizing your profile to update contents in regular intervals.
Twitter is a very effective platform, you can share your business services on it. Try to share high-quality, unique and informative content, also try to analyze what users want and give them the information that they are looking for. Not to forget to use tags related to your services or business.