I am planning to start an article posting website in my local language. Which is the script available in market with lowest cost. Also how can I promote my website. Please help me.
You can promote your site by hiring freelance writers to write articles who are knowledgeable with SEO.
That's a good idea. Furthermore, place your link any chance you can but only if the site owner permits it. For instance, you might be able to create a Facebook page and promote that in order to get traffic.