If you read books and you should. You should be looking for free books. Logos gives away a free book every month from various authors. Then to make something good even better they offer another offering by that author for only .99 cents.
Octobers offering from Logos is from Jürgen Moltmann’s work “The Crucified God” and for .99 Logos is offering “The Theology of Hope.” Jürgen Moltmann is a German Reformed theologian who is Professor Emeritus of Systematic Theology at the University of Tübingen, and author of several books.
Jürgen Moltmann’s Theology of Hope is a theological perspective with an eschatological foundation and focuses on the hope that the resurrection brings. Through faith we are bound to Christ, and as such have the hope of the resurrected Christ (“Praise be to the God and Father of our Lord Jesus Christ! In his great mercy he has given us new birth into a living hope through the resurrection of Jesus Christ from the dead” (1 Peter 1:3, NIV)), and knowledge of his return. For Moltmann, the hope of the Christian faith is hope in the resurrection of Christ crucified. Hope and faith depend on each other to remain true and substantial; and only with both may one find “not only a consolation in suffering, but also the protest of the divine promise against suffering” 
In my first reading of Moltmann I am struck by his clarity in bringing us back to the power of the resurrection. This is clearly seen in both books offered this month. We can’t talk about the resurrection enough as believers. The resurrection is the cornerstone of Christian faith if Christ was not raised we have no hope no forgiveness of sin and no future. I don’t know if I will read Moltmann’s work in totality but I will definitely use it as reference material when writing lessons and preparing for messages. Thanks to Logos, searching his work is quick and completely painless.
Getting free books is great having those books as part of your searchable library is even better. This is where Logos really shines every book you add becomes part of your library that will only enhance your personal study time. The search capability of Logos is what makes it such a powerful tool. What took me hours to find in college I can now do the same search in minutes with Logos. Below is a quick video that shows off Logos search capabilities. They have much more exhaustive tutorials on their youtube channel