Read about gambling: 

https://www.helpguide.org/articles/addictions/gambling-addiction-and-problem-gambling.htm

https://harmreductionjournal.biomedcentral.com/articles/10.1186/s12954-017-0136-3

Try to answer to theese questions:

Do exist some differencies between substance addiction and non-susbstance addiction (gambling)? 

What factors influence attitudes of children to gambling? 

Training: 

https://quizlet.com/131428107/gambling-flash-cards/