When you first create a blogger account there are many posts that is displayed on the main page of your blog. Not a few of the bloggers turn it into a post that is displayed on the main page. You can also choose how many posts are you going to display in front of the main page of your blog. The way is quite simple and easy, first you go into your blogger account and click "settings" and then click the "formatting" the third tab at the top left, after that you can choose how many posts are you going to show on the main page of your blog at the first field of the page. Do not forget to click "SAVE SETTINGS" after you change it.
How to set number of posts on the main page: Sign in Blogger account --> click setting --> click formatting --> select number of posts to display on main page --> click SAVE CHANGES and done!