Nuts and Bolts:
I.P.R.'s - International Production Resources:
Mandy - International Film/TV Production Resource
IMDB - International Movie Data Base
New York City - Mayor's Office of Film/Theatre/Broadcasting
California - California Film Commission
International - Global listings of Film Commissions
AUDIO:
Music - Public Domain Music (Royalty Free)
Sound Effects - Free Sound FX
UNIONS:
I.A.T.S.E. (International Alliance of Theatrical Stage Employees)
AEA - Actors Equity Association
DGA - Directors Guild
SCRIPT REGISTRATION: This includes outlines/concepts/roughs/teleplays/etc...
WGA East - Writers Guild of America - East
WGA West - Writers Guild of America - West
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The Production Hub - A Comprehensive Listing of Just About Everything