Check out The Church of God: Body of Christ and Temple of the Holy Spirit, by Fr. Louis Bouyer. Not only will this 635 page tome by a serious intellectual be of tremendous help, I am sure, but it happens to be on super-sale over at Ignatius Press for a mere six bucks. Moreover, contrary to what you may read on their website, standard shipping will take about a week.
Here’s part of the description from the provided link:
*How does the Church perceive herself? Fr. Louis Bouyer’s The Church of God sets out to answer that question, in light of Tradition and theological reflection through the centuries, but especially by drawing on the teachings of the Second Vatican Council. This book is a highly-readable, thorough synthesis of ecclesiology after the Council, presented by one of the greatest theologians of the 20th century.
*Here is an Amazon review of the book.