Thread: Low cost modular - under $400?
Sadly, I am not the right person to give you tips on this, I am on the same boat as you. But, I recommend you to start using the Finder Module option by category and read all about the modules and make some investigation on them, manuals and stuff. Then, you put together your own creation, don't worry, the people on modulargrid are awesome and will guide you and help you on all you doubts. I did that and they treated me really well and still do, and you can learn really fast after all their ideas and suggestions.
Just decide what kind of case you will need at first, make your rack public on the forum and the vast ocean of knowledge will come to you.