USMCFLYR and others
I used the following "free" website for Technical interview prep:
Netjets interview gouge
I also did the the aviationinterviews.com site and only paid 6.95 for 1 month and then cancelled my subscription. I'd print out only the last month or two of interview gouge to read as they get redundant in a hurry. Lastly, if you don't have Richie Lengel's book "Everything Explained for the Professional Pilot" spend the 50 bones and get it ASAP. It is all Part 91, 91K, 121 and 135 explained very well even a Marine could understand (they use pictures as well mostly for us AF types) HA!
Just be careful with what gouge you read, the sim profile has changed and they've retooled their hiring department.
Good Luck
Disco Dawg