New Light, I'm a SAHM and it can be extremely mind-numbing. I take classes at my local university just to keep in touch with the outside world.
Staying informed and exercising your brain is something you have to commit to, regardless of religious affiliation.
In the past, when I was single and couldn't afford to take classes, I decided to educate myself via the public library. I wrote down a list of people that interested me. I went to the library and checked out every single book about those people and every single book ever written by the person I was studying. I could spend six months reading about one person but, when I was done, I certainly had learned a lot! And as another poster said, there are always lots of books in the bibliographies to further your research.
I read about Theodore Roosevelt, Laura Ingalls Wilder, and C. S. Lewis, to name just a few. Fascinating people.
Best of luck jump-starting your brain!
StAnn