Been away for a few days.
Kovidgoyal is right about the foundation series. When I looked the series up in the wiki I clicked on this
link where Isaak describes the order the books should be read in. He slipped in a measly other 8 books to accompany the saga.
Most of what I read from that series comes from paper. NatCh gave a good source to find them. Unfortunately paper is still the major source for older titles not yet on Public Domain.