A warm welcome to all in-future managers!
If you'd like to save some money from buying
stupidly expensive business literature just have
a look at this german site here:

http://studentensupport.de/

or in English (the better one, haha) :

http://www.freeebooks.info/4/Business-&-Investing

http://www.businessbookmall.com/Free%20Business%20Books.htm

Have fun enjoying them and
take care!