2 Timothy 2:15
A great way to begin a home group with a bunch of young people is to kick it off by watching Kirk Cameron's documentary "Monumental". This covers the broad strokes of history regarding the Pilgrims who came to America on the Mayflower. It is available on iTunes and from other movie streaming services.
For other resources related to the three main points of the 2020 Vision, the following are a good start. Some are available online, others are books that need to be ordered. The resources listed here are highly recommended, and worth the time and money to order.
A very inspirational account of prayer and revival in American history:
The Old Testament Template Landa Cope