In terms of the training you'll likely get things will start out with a lot of solo drills of striking and blocking techniques along with basic movement skills. From there you'll probably move into kata methods, one and three point sparring and maybe free sparring eventually. Shotokan is roughly 50% empahsis on punching methods and 50% on kicking methods with very little in the way of throwing or locking methods unless the teacher has a personal interest in the earliest versions of Shotokan or has co-training in Judo and/or Aikido and has chosen to incorporate some elements from these styles in his teaching.
Shotokan is one of the better regulated Karate forms. Ask the instructor about his credentials and which organization he is associated with and then check them out afterwards.