Create good content / well-written blog posts:
content the king it is make user to visit your page if it is unique and good.
Make a public announcement on your social media profiles that you've started blogging:
first few reader is may be your friends so just ask them to do feed back...
Ask a small favour from your close friends:
using email to let know about your new blog is the great way to get feed back..
Search for people who have previously tweeted/shared posts covering similar topics
Look for important people in your industry/niche with different tools. Check their posts, add comments and become active in the community.
Start participating in forums and blogs that are similar to yours.
Establish relationships, get links & optimize your blog for Google.
hope it will help you just try to follow the above instrction...