documentation / reference help

[Scott Meup]

I'm trying tolearn Python.  The documentation tells syntax, and other things 
about a command.  But for too many commands, it doesn't tell what it does. 
for instance, in VB the 'return' command tells the program what line to 
execute after some event (usually an error). In Python it appears to return 
a value.  Where does it return it to?  I couldn't find anywhere on the 
Python website to find out or to ask Python to upgrade their documentation. 
Can somebody please recommend a source.