I hope this isn't a stupid question ...

[Rich2266]

i'm very new to photography and do not know too much about it but could someone tell me what means?

[Raven]

I always say the only truely stupid question is the one you didn't ask.

= Trade For CD, it is a more modern equivalent to TFP which stood for Trade For Prints. It is a way for Models, Photographers, etc to work together to build up portfolios without paying expensive fees.