Q: why does the download only show in shared content on my ipad? and can i access the shared content without wifi ( example driving in car?)

I am using the icloud from a pc, and sharing with my ipad ( 1st generation) new to this. I have downloaded some digital copies into my itunes account. On my Ipad one shows under movies and 2 show under shared. Y is this and can shared content be accessed without being contected to my home wifi?