Search Engine Optimization most important step of blogging. Because it's make more visible your blog to search result and drive traffic. But if you doesn't have updated blogger sitemap file, then it's never help to boost your SEO. But you will lost your time, money and more things.
If you think to get ranking on Google, you must need to learn about how to create sitemap for and how to drive traffic.
Just follow these steps and get rank #1 position on Google.

1. Login in your Google Webmaster Account and select your website.
2. Now you will go to your blog dashboard and click Sitemap under Crawl section in right menu.
3. In the next page, you will see an sitemap submission page. In this page, you will see an box called Add/Test Sitemap.
4. Now paste atom.xml?redirect=false&start-index=1&max-results=500 this link here and click on Submit Sitemap.
5. Now click on Refresh page and you're done your job.

After completing your submission, search engine bot will crawl your website regularly and soon you got rank and get traffic also.
If you have any suggestion or more information, then comment and I try to solve yours.