As the infographic below indicates in bright, bold colors, the statistics are undeniable: Using Pinterest for marketing is a no-brainer if you can have attractive visuals as part of the content you provide.
Any online marketing plan should include some Pinterest interaction. While you can avail yourself of Pinterest Promoted Pins, there are also many ways to get your feet wet and test a potential market without spending a dime (See this case study about using Pinterest for marketing from Digital Marketer).
Don’t forget that you can add a Pin-It Button to your browser and post it to Pinterest when you come across an image that might appeal to your market. And adding your links to any visual can result in repins that can expand your visibility within the Pinterest community.
Power Of Pinning, a recommended course on using Pinterest to your advantage, might be of interest to you.