Question 025: Conditioning

I am learning things from a new school that I've never been exposed to before, such specific one-step sparring techniques. I haven't done specific one-steps like this before. Is there a book or reference manual I can purchase for self study at home? I recognized some of the knife and gun one-step techniques from Krav Maga, so I am assuming this might be because my instructor may have some experience in this art. Also, I've been away from the art as there hasn't been a school in the places I've lived for the last 7 years. I am finding my condition to be less than optimal as my sport of choice has been sailing. Do you have a recommended conditioning program other than the running that I may use?