http://www.historylearningsite.co.uk/hitler_youth.htm
This link is for information on the Hitler youth. This link is really relevant if you want to learn more about what type of lifestyle Helmuth.

http://www.mrdowling.com/706-hitler.html
Alot of the book is about how life changed after Hitler came to power. So this link is about Hitler's rise to power to tell about the change in Germany.

http://colley.co.uk/garethjones/german_articles/under_hitler_1.htm
This gives a pretty accurate description of what Nazi Germany was like on a daily basis for anyone that wants to know about that.

http://gh.oxfordjournals.org/content/27/4/560.extract
This is another link describing everyday life in Nazi Germany and this is important to understand because the book is based on a true story.

http://en.wikipedia.org/wiki/The_Boy_Who_Dared
This is just a quick summary of The Boy Who Dared in case somebody hasn't  read the book they can get a quick jist of the book.

http://en.wikipedia.org/wiki/Extermination_camp
Because the story is told by Helmuth while he is in a concentration camp so it gives a little perspective on what those are like.

http://www.buzzle.com/articles/life-in-concentration-camps.html
This article is specifically about the life in a concentration camp. Just to give people a better perspective on that.