Facebook is an extremely important tool for marketing your business. Everyone should use it no matter how small or large your business.
Here's how to get started:
1) Create a business page
2) Fill out your business information, including business name, website, company history, hours of operation, products/services offered etc..
3) Update your page regularly with promotions, photos, advice or anything you think your customers or potential customers may find interesting.
The most important thing about marketing your business on Facebook is keeping your page up to date and posting regularly. If you want customers to interact with you, you need to engage them and encourage them to visit your page, leave comments etc... Post photos of your recent work. Post some nice reviews that you got about a certain product. Link to an interesting video you saw on youtube recently (keep it relevant!). Offer your customers a discount coupon. Most importantly, encourage people to share your page with their friends, who might share it with their friends, and their friends, and their friends.
For some examples you can visit our Facebook page at:
www.facebook.com/techsew
Good luck!
Ron