Every couple must have a set time to study Torah together.

What should they study? Something that interests both of them—such as the Torah portion of that week, or something about the Torah seasons approaching. ~Hitkashrut, 70 ~ R’ Tzvi Freeman

On a personal note, a year or two ago, I began learning with my wife one halacha each night out of the Kitzur Shulchan Aruch, which I have found very rewarding.  It is a very easy way to learn halacha.  There are many options, but I learn out of this one and love it – http://www.amazon.com/KLEINMAN-EDITION-KITZUR-SHULCHAN-ARUCH/dp/1422611043

If you are an observant Jew and not currently learning any halacha, it is vital that you begin to do so.  Just my 2 cents.