ABAP Objects book

Dear All,

I am using the Horst Keller ABAP Objects: An intro to programming SAP applications book and am having a little trouble.

for one, i cannot use the s_abap_book development class, and the book revolves around that...

i know i cannot use the s_first_program or create the s_first_program because i need the "unlock code" or whatever it is, but is there a way to use or copy the development class? because i can create the z_first_program program to follow along...

it would definately help...

thanks!