Phil Sturgeon's Template Library explained on an example + its usage with Wiredesignz's HMVC

[eluser]TomTom[/eluser]
Okay, apologies for a vague question from the previous post. It took me less than a day to figure it all out. Wasn't easy but wasn't too bad either. I've got everything working except breadcrumbs and themes. How on Earth do those two work? What files should go in /themes folder? Any hint is much appreciated.