RSS Feed for my new blogs?

Hello,

I’m in an area I know nothing about. Amazon’s Author’s Page needs an rss feed to display my blog. When I was BlogSpot I figured it out and supplied it with the following:
http://rustywilliamson.blogspot.com/feeds/posts/default?alt=rss

But I’m moved my blogs to my WordPress site and have used ‘category’ to set up my two blogs. I do not even know what an rss feed is and have no idea how to supply my Author’s page with an rss feed to my new blogs.

I really need help on this.

Thanks,
Rusty