Add RSS/Atom Feed Signup; Widget Problems

[jdang307]

I want to add an RSS feed signup (feedburner tells me I have RSS and Atom, which do I use? Atom?).

This is my site. Note I changed the code per instructions in this forum so that it's like a regular blog, not the website looking home page.

www.totalwealthplanner.com

I just want to add an RSS feed signup anywhere on the site, and have it on every page. I did do a search, and said read that I should just create a RSS widget. Which I did. But, and this relates to my second question, when I do that it doesn't show up and all the other sidebar items disappear.

Second issue, whenever I add a widget to any of the sidebars, such as Sidebar post, or Sidebar Page, the items already in there disappear. How do I fix this?