Reading something different might be a good idea.
http://www.amazon.com/exec/obidos/tg/detail/-/1592442595/qid=1092338056/sr=1-2/ref=sr_1_2/102-9440947-1785768?v=glance&s=books
http://www.amazon.com/exec/obidos/tg/detail/-/0810827263/qid=1092338251/sr=1-1/ref=sr_1_1/102-9440947-1785768?v=glance&s=books
http://www.amazon.com/exec/obidos/tg/detail/-/1592442595/qid=1092338056/sr=1-2/ref=sr_1_2/102-9440947-1785768?v=glance&s=books
http://www.amazon.com/exec/obidos/tg/detail/-/0810827263/qid=1092338251/sr=1-1/ref=sr_1_1/102-9440947-1785768?v=glance&s=books