I sincerely respect your concern for dad and also it is very wise of you that you started looking for proper procedure of quitting smoke. What is the key problem with most of the smokers is that while they go for quitting, they just give it up at once. It is not easy to quit smoking as such because it is an addiction. You can get a very good e-book describing procedure for quitting, from here http://www.stop-smoking-guru.com
. One of my friends used it recently and it has helped him