Understanding the blog structure

OK, I apologize for being completely thick in the head about this, but I just do not get the way the blog breadcrumbs work in the Enfold theme. I have two blog categories: “Performances” and “From the Director.” I’ve tried all variations including setting up pages with a blog post element limiting the category for that page. That sort of worked ok depending on how I navigate to one of the categories.

If I navigate to those posts from my Categories in the footer, works like I expect. However, on the frontpage, I also have these two categories available to click on in the content area. When I do, the breadcrumbs are really wacky: “You are here: Home / Performances / Performances / Christmas With The Chorale” and the post page title is: “Blog – Latest News” not even one of my categories.

If I create a performance “page” and have “blog posts” in the layout builder limited only to “performance” the page is a mess. Title is wrong, breadcrumbs are correct, but both categories show up in the post.
http://rvchorale2013.roguevalleychorale.org/performances/

Homepage: http://rvchorale2013.roguevalleychorale.org/

This is the second time I’ve have trouble with this, and again, I’m sorry to be a slug. I hope this can be explained so that I never have to bug you again.