Hi

I suggest to think twice if you need global this means that your design 
is not that good.
In addition that are plenty of excellent books that I collected over 
the year and I suggest you
to browse them. You will find answer to a lot of your questions. In 
addition, the answers are
also in the system as yoshiki mentioned. So the best way to learn is to 
open the box.

Have fun

Stef