Online Booking System w/ .Res
I'm starting an online booking system, allowing clients to book flights, car rentals and hotels through a travel agency website. The system is gonna use Sabre .RES with the ability to incorporate offline deals (the ones outside the GDS) the travel agency may have.
I'm considering using PHP and mySQL for the offline deals (still not sure about it) and I also don't know how to have access to Sabre (do you?). Does anyone know how to implement a site like this (particularly when working with Sabre .RES)? Additionally, where can I find some info (books, tutorials, sample code, ...) about the subject? I'm just getting started here, so no information is too basic.
Thanks a lot,