You won’t get much traffic until you build a decent following. So, start following people that might be interested in what you have to offer. Also, you should post regularly (3–5 times a day) and create various types of tweets to see what works best for your audience — plain text, images, links, etc. In addition, create tweets that your followers will find interesting or funny, don’t just promote your content. Of course, do a hashtag research and use proper hashtags. Joining Twitter chats and group chats will help a lot.
But what I found to be the most important on Twitter is to be friendly and be yourself. Talk to people, comment on their tweets, and get to know them.