For my birthday this year, my older brother gave me a book entitled Raising a Modern Day Knight by Robert Lewis. He had read it and found it very helpful. I got the chance to read this short but powerful book yesterday on my day off and found it very inspiring.
Lewis and some friends made the observation that modern culture doesn't have a right of passage into manhood. He offers some ideas for how men can help their sons transition into adulthood with meaningful ceremonies (such as having godly men gather to encourage them and pray over them... nothing too far out).
He also says that young men need a biblical vision for authentic manhood. He builds it on Scripture. Here's a list of his "Manhood Principles" without explanation.
A real man...
#1 - rejects passivity
#2 - accepts responsibility
#3 - leads courageously
#4 - expects the greater reward...God's reward.
Read the book for a thorough explanation of these principles and why they are so important. I recommend it to every man who has a son.