Yes, you could spend hours on Facebook looking at pictures of cute kittens. Alternatively, you could harness the power of social media to build your brand and get your business in front of people who share a need for or interest in your product. If you want to do the latter, I recommend Jason McDonald as a teacher.
I was recently sent a draft chapter from a book Dr. McDonald is writing (Social Media Marketing Workbook) and learned things I didn't know about Facebook. I was an early adult adopter of Facebook, trying to stay in touch with college kids, but still have a lot to learn about searching and about the algorithms used to rank Facebook pages and posts. McDonald is able to teach me.
Learn to create a profile and then a page for your business or organization. Then learn to strategically post after first looking round to see how your market interacts on social media. One key is to be social--not just "buy my stuff" but building relationships through sharing interesting quotes, pictures, and stories. Relationships are key to long-lasting business success.
Contact Jason McDonald and get on his mailing list for more information about training in SEO and social media use.