I'm about to build another site, this one for my Architectural business.

I would like clients to be able to login to a section where they can upload sketches or photos and once I have completed the drawings they can view the plans. I would like to be able to provide my clients with individual login and password details so they can only view their own projects.

I hope this can be done with SBI, I just purchased the site! Any idea where to start? Reading Information, Software that maybe needed etc