"Experts A Comprehensive d20 Sourcebook"

[Conradine]

Does anyone know a website where it's possible to download a free pdf of that sourcebook?

[Douglas]

I think this (http://blank.drivethrurpg.com/product/28798/Experts-v35?hot60=1&src=hottest_filtered&it=1&filters=100_2191_1120_0_0_31817&manufacturers_id=2132) is the book you're looking for. A pdf will cost you $17.99.

Now, if you're looking for illegal copyright-violating sites, which I strongly suspect are the only kind that might have it for free, that is an inappropriate topic for these forums.