I played the sax for two years and now I`ve got 3 weeks to get through EE2000 book1 and I can`t play any low notes and I don`t know if I can play the high notes either.
Any help an how to play low and high notes? :0

to blow high notes tighten lips
and to play low notes relax lips

Go to this link:
http://home.clara.net/hylton/practice.htm

You should find some material there that you can download and print that might be helpful.