“What is the first step in treating alcohol addiction?”

Speaking with your doctor (primary care or psychiatrist) would be a good first step. Medications can be very helpful as can individual and group therapy. You can use PsychologyToday to find a provider that might be a good fit for you if your current provider does not have any recommendations. AA and Smart Recovery are also free community groups for support. Also here is the free national hotline that can tell you more about resources available in your area https://www.samhsa.gov/find-help/national-helpline