My experience has been with a group-run program, and I must admit to a bias toward this type of program. If you are interested in more information on an individual program, I suggest you contact a cardiologist in your area who might have one. Two is for people recently discharged from the hospital, or who need to be on a heart monitor. Phase Three is for people who are off the monitor and almost ready for the maintenance, or Phase Four program. Phase Four is an ongoing program for people who want to continue their exercise improvement.
Some people have concerns about starting a rehab.
Even though people are in a group, each person has an individual program which is specifically designed for that person. Most people start at a very low level of exercise due to the fact that their hospital stay and extended illness results in deconditioning. People progress at their own pace. Most improve fairly rapidly, with a noticeable difference in how they feel starting in the second or third week. It also offers an educational component.