email subscription button

I’m trying to get a simple email subscription button working, but if I try to just add one using a plug-in through feedburner, then it ends up messing up my theme, since there only seems to be the option of adding it to either sidebar 1 or sidebar 2, but not very much easy information on how to low it down a bit in the sidebar.

What is the easiest way in the universe to insert an email subscription button into my blog. I’m brand new at wordpress.

My site is: https://www.rebuildme.ca

thanks.