Short answers, pulled from the story.
The S-I stage carried eight H-1 rocket engines burning RP-1 fuel with liquid oxygen as oxidizer. Engineers arranged these engines in two clusters consisting of four fixed central engines and four outer gimbaled engines.
The first test flight occurred on the 27th of October 1961 at 15:06:04 UTC. This Block I mission reached an apogee of 136.5 km with a mass of 115,700 lb.
Chrysler developed the first stage by repurposing existing rocket components. The S-I consisted of 9 tanks that were previously used on existing rockets.
The SA-5 launch on the 29th of January 1964 marked the first time the vehicle achieved orbit. This Block II mission placed a payload into an orbit of 760 x 264 km.
Engineers released 86,000 kg of water at specific apogees as part of Project Highwater to study upper atmospheric conditions. This procedure occurred during the second and third test flights in April and November 1962.