I wanted to share the bible study my family is doing right now. My niece-in-law introduced me to David Platt's teaching last year (I think) and we started off by reading his book Radical: Taking Back Your Faith From the American Dream . WOW, what an eye opener!!! Then about half-way through, we stopped and started a video series by him called Threads of the Gospel. We are finishing up this part and then we will return to the Radical book.
I cannot say enough good things about both of these. The book helped me to see how that our culture has influenced how I interpret the Bible and what my purpose REALLY is.
If you are looking for a better understanding of the Gospel, or looking for a good family bible study (especially great for Teens!) I highly recommend these :)