Hello, so I have certification books etc and I would like to be able to read them in the iphone. I know in emails you can read pdf attachments, but that seems to stall the phone with a pdf that large. Is there any way to copy a pdf to the phone hard drive and launch a program that opens it up? If someone could provide me with a step by step, or a link to one I would appreciate it. There doesn't seem to be a straight forward answer out there, and the app store, seems to have a ereader, but I read you can't open up books you have with it. Thanks in advance.