Code-File structure

[Henrik Valter Vogelius Hansson]

Hi!

I'm new to D and trying everything out. Got the basics down which 
are very straightforward and similar to other languages. My 
professional background is primarily in C/C++-variants and Ruby 
if it helps.

I have a problem with how modules, packages and files work. I 
don't really know how I am supposed to organize my code. I like 
namespaces from C++ which is probably my curse. What I want to 
write is code similar to this:

MyClass obj = new MyClass();
SomePackage.SecondClass secondObj = new SomePackage.SecondClass();

Problem here is that SecondClass is a module. Is there some nifty 
trick I can do here to solve this? I tried with just having one 
module file which would hold all it's classes and functions but 
that backfired very quickly as you can imagine since it grew too 
large too quickly for most simple things.

I am open to any suggestions of course which would make it simple 
for me to have a good structure with my files and also make my 
code easily readable. Though if possible I would like anything 
that goes under the package/module can somehow be placed in it's 
own folder.