[lulu16]

Thank-you for the suggestion of Footfall. There were just too many of Niven’s books to chose from ( and not in my library) that I just stopped. I just ordered it on Kindle. Please tell me what I should read of the Known Space books.

[Bloody Sam Roberts]

Well...start with a collection of short stories in "Tales of Known Space" and then you can go to the novel "Neutron Star".

After that I would recommend "Ringworld" and the two sequels. The there is the "Protector" series which deals with the engineers of the Ringworld.