The best 9 month investment of my life was spent reading a book 5 times.
Back in 1995 (getting farther all the time...) I was privileged to go to the School of Biblical Studies through Youth With a Mission in Canberra, Australia. Yes, we basically read the Bible five times through those nine months.
We learned the Inductive Bible Study method, which places an emphasis on learning the literary and historical context for the book of the Bible one studies, and reading the text and listening to what it says. It is contrasted with Deductive Bible Study, where one goes to the text with a preconceived idea and tries to find support for it in the Bible.
Those nine months did more for me in grounding me in the Word, and was invaluable to this day. Now I have found that it can be a resource for anyone.
There is a website entitled "The SBS Podcast" that gives downloadable teachings from some of the key leaders in the SBS system. You can download them directly from the site, and you can also subscribe to it through iTunes.
I highly recommend this resource for foundational Biblical study. There are topics from the Trinity, to Israel in New Testament times, to specific teachings on books of the Bible. I have a longtime personal friend as one of the teachers, and Ron Smith, who runs the SBS program within YWAM, has been a Bible teacher and author for years.
Oh, and the best thing: it's free.
I encourage anyone interested to check out this great free resource for the Body of Christ. YWAM's motto is, "Know Him and make Him known." One of our best ways of knowing God is through His Word.