Back before I was pregnant, I was branching out on clothing patterns, and tracked down the Darling Ranges Dress by Megan Nielsen. I had wanted to sew the dress for a long time, and I was thrilled to get started. I cut out my AMH voile along with Free Spirit solid voile for lining, and...
I was scared of FBAs too, but now they are my best (breast?) friend ;-)
Seriously though, have a look at several tutorials to find one that makes the most sense to you. The Megan Nielsen tutorial confused me no end! Good luck :-)