Handbook of Forensics Services from FBI

Here the link to the Handbook http://www.fbi.gov/hq/lab/handbook/forensics.pdf
Introduction
The purpose of the Handbook of Forensic Services is to provide guidance and procedures for safe and efficient methods of collecting, preserving, packaging, and shipping evidence and to describe the forensic examinations performed by the FBI’s Laboratory Division and Investigative Technology Division.
Other report and publications from FBI could be [...]

Digital Evidence: Standards and Principles

What is Digital Evidence?
Digital evidence is any information of probative value that is either stored or transmitted [...]