On the Laserfiche site, you'll find a number of new brochures that cover these topics—there's a PDF that covers Laserfiche Rio and another for Laserfiche Avante.  

You may also find the other resources on the site helpful, including Quicker Better Safer and the Case Study Portal, both of which provide great illustrations of Laserfiche in action.

If you are looking for additional PDFs, the easiest way to get to them is searching the Laserfiche site and filtering by file type.  I hope all this helps!