Do not get started is my best advice.
I tried it when I was studying in High School (if I remember correctly, I was in 2nd year or even 1st year in High School when I first tried it) out of curiosity.
I continued to do it for I think a month before my family saw me, and they're angry at me when they saw me smoking. After that, I didn't smoke any cigarette anymore until now.
It's more than a decade sine I first tried it and TBH, I don't see any benefits of smoking whether it would be cigarette or the more popular one right now which is vape. I see more negatives on trying both of them than positives. If there's some positives that cigarette can give to a person, maybe they can share it here.

Quitting in smoking is kind of hard especially when it becomes your hobby already. It's like the same with quitting in gambling, but I believe that if the person is willing to change, he can quit if he wants to. Just quit smoking for those who are still smoking out there.

Smoking will not give you any benefits, and just calculate the money you spend on it, and think if that money is being used to invest. It would be worth more right now.