Social Media Marketing for each business is quite different. There is no one size fits all for Social Media platforms suited to a business.
This article from Hootsuite has some great insights about the demographics of each social media platform so you can match what your ideal client demographic is, to find where you need to be placing your business footprint online, and with which Social Media Platform.
The article goes into what types of advertising you can get on each platform, so if you are looking to get your business noticed this is a great place to start. https://blog.hootsuite.com/social-media-advertising/
There are many great success stories, as depicted here by the Social Media Examiner take a look and see if any inspire you to your next social media goals. We would love to hear about your success stories, please post and tell us in the comments what you have done that got your some results you are happy with.