Posted by: Yellowdog5
I did read the fall of reach, the flood, and part of first strike.
Complete First strike and read ghosts of Onyx if you want to know more about the Spartan III's. If you want to know more about the beginning of the war, read contact Harvest. Interested in ancient aliens? Read Halo: Cryptum and Primordium. Wanna know more about what happened to the Humans after Halo 3? You should read Halo Glasslands.
Or just search for all the information you want on Halopedia :P