Instagram for SMM?

I do have social media accounts. I have Instagram, Twitter, Facebook, Snapchat and G+. The thing is I don't know how to start SMM using those. Is the company the one who is going to provide things or tools for me or I should be the one to do the research and get tools I need?. I really wanted to do SMM, I just don't know where to start. Any recommendation?

Do research

1. Determine your goals
2. Know your audience
3. Create amazing content
4. Focus on quality, not quantity

You should create attractive content related to your services and post them on these Social Media sites also try to increase your followers.