Hi and welcome. I'm guessing you want to quit? Well, I can tell you what I did in the order that I did it. I started with a doctor appointment. A doctor can assess if you will need detox. Which is very important to consider. Depending on your intake, quitting cold turkey can be dangerous. I know, I ended up in the emergency room with severe withdrawal symptoms!
Your doctor might be able to recommend treatment programs. My doctor gave me a referral to an outpatient clinic. There is also inpatient rehab.
I started with my outpatient program and a week later I started with AA. You can choose other forms of programs, like RR, etc. For me it doesn't matter much which program as long as you have A program.
For me a program was important. For years I tried on my own and rationalized over and over again that it wasn't that bad. A program educated me about alcoholism and also gave me a structure for recovery. Good luck!