Welcome to the Talking Sober, best clean cult on the interwebz! 
It sounds like you are very aware of what addiction has cost you, and are motivated go a different way. I hope the AA groups are helpful for you. They’ll all have their own ‘feel’ to them because they’re made up of people, so if you go to one that you weren’t happy with, don’t let it stop you from trying another.
Friday is a great day to quit! We even have a Friday thread where you can pop in specifically on Fridays. 
I hope this community will be a useful tool in your sobriety tool belt. There are some great threads that focus on other things such as plants, food, and pets, which I think can help one feel more comfortable and welcomed within a group that they might share some more personal details.
You’re right. Sometimes it will be hard, but you can do this. Congratulations on the first day of the rest of your life. 