The classes studying the documents of the council are using Word on Fire's superb Vatican II Collection, which brings together its four major documents, the relevant writings of the post-conciliar popes (e.g. Pope St. John Paul II), and in-line commentary on the documents by Bishop Robert Barron. You can purchase it at the first meeting of the class for $20 or get it directly from Word on Fire (we have a link for you below) if you can't attend the in-person sessions.
Listen to Season 2 of our podcast, The Deacon and the Doc that debuts September 12. It offers insights gleaned from the book studies, plus ongoing conversation between Dr. Thaddeus Romansky and Dcn. Mike Beauvais about Vatican II at 60 and the Eucharistic Revival.