My friend Andrew Errington has been published by Matthias Media! His booklet, Can we trust what the Gospels say about Jesus? "[I]s designed to be a brief and readable introduction to the questions that bear on the historical reliability of the Gospels. There are good books on this question out there already; but in my experience, not many people bother to read whole books on this topic — and giving a friend a book can be a bit daunting." - Andrew Errington.
Andrew has used the material for a number of years know with teenagers on camps that he leads on. Although there are lots of books out there on this subject, this one is short (which in this case is a good thing) I expect to be a quite engaging to resource for discovering Jesus (an earlier version was once available on Andrew's resource page).
Matthias Media even have an online sample that you can check out.