Excerpts not appearing on home page

I am wanting the home page of my blog to contain the excerpts from all of the posts we make for multiple categories. However, non of the excerpts i have appear on the home page or any other page for that matter. Is there a way to customize the excerpts to appear on different pages?

thegourmetfoodieblog.com

Any help with this would be greatly appreciated I have been working on this for hours!