Welcome to steemit! I have found this comment by @public-eye to be pretty helpful:

I have a few tips for you......:

• find a community. Maybe join the @minnowsupport project.
• comment and follow other's articles for your first 1-4 months here more than you do your own posts. This will actually help you to gain Followers. And improve and refine your Posting style(by seeing other's good examples and bad examples).
• don't plan to get rich. If you come for money, it will probably be a struggle.
• it will still be a struggle when you are new.... for 2 or 3 months. As you meet more steemians and ask questions and figure things out, it will get easier.
• only Post original work. Many new Steemians get into trouble when they copy and paste things from Google or from the internet, AND IT IS NOT their photo, writing or work. IF you can't post your own things, better not post. Otherwise @cheetah will get suspicious!
• comment and make friends, but don't ask "Follow me" or "please Upvote me" Maybe after you have become friends... maybe. But never as your first, second or third comment to them. Never!
• Use appropriate tags. If the tag doesn't match. Don't use it. Tags are important to help people find what they are looking for. Misusing tags causes many problems here on Steemit.
• have fun!

hope this helps! source for the comment : https://steemit.com/steemit/@richdaddy/introduction