I agree with another poster, it is not a great idea to do both the Chicago and the NYC marathon in the same year, especially if it's your first.
Training programs are really dependent on your previous experience. If you're starting as a non-runner (or a once-a-week runner) then your training plan would be much different than someone who is running 5 times a week. Also important to take into account if you're doing it just to do it or doing it to do well.
I used a plan that was based on a Pfitzinger plan. It was helpful (I got a Boston Qualifier on my first marathon), but you need to be quite disciplined. It is high mileage and takes commitment to running 6-7 days a week.
Training programs are really dependent on your previous experience. If you're starting as a non-runner (or a once-a-week runner) then your training plan would be much different than someone who is running 5 times a week. Also important to take into account if you're doing it just to do it or doing it to do well.
I used a plan that was based on a Pfitzinger plan. It was helpful (I got a Boston Qualifier on my first marathon), but you need to be quite disciplined. It is high mileage and takes commitment to running 6-7 days a week.