The "3-A" rule of Digital Forensics
Acquire the evidence without altering or damaging the original. Usually, professionals recommend to create two copies of the original evidence.
Authenticate the image, it's always a good idea to check "MD5 Hash -Match" of the image.
Analyze the data without modifying it.
Open Source eDiscovery Tools
1) Freeeed is opensource hadoop based ediscovery engine
2) Searchblox offer a free ediscovery tool
Digital Forensic Certification
EC Council Certified Hacking Forensic Investigator (CHFI)
Access Data Certified Examiner
Useful SQL Queries
Find Current database location
SELECT name, physical_name AS current_file_location