1st) Establish your business core presence on the Internet with a well planned and implemented website. Ensure your site is in compliance with all coding standards and has all of the components that make a fully functional website.
2nd) Ensure your website is the central part of everything you do to advertize your business. Include your website on your business cards, in your signatures and tag lines, in any form of print or mailer media you do. Rather than making FaceBook or Twitter or any of the hundreds of opportunities for you to advertise your business as standalone advertising points, create instead back links that point towards your business. The content will always be viable and visible in whatever venue you are publishing in the difference is each reference creates a unique back link to your main website. Those back links add up!
3rd) Use short heavily key-worded pages designed to promote one idea, feature, service or product and use this smaller body of content to post to your outlying venues such as FaceBook, Twitter etc.. Let each of these baited hooks reference to the main body of content within your website from the outlying venues (FaceBook, Twitter, etc...), there by attracting more visitors and potential customers to view your business.
4th) Invite your customers to visit your website and like it Google plus one it or give you good feedback either within your own site (preferred) or from outlying venues such as FaceBook Google, Bing, Yahoo etc...
5th) Update your content frequently. Believe this those that are pro active outperform those who are passive every time. Lead the pack to dominate the pack. This can be accomplished in a number of ways and it is up to you to decide how to best get this done in your business interests.