Beginner meetings vary greatly between groups. Our group usually conducts it as a first step meeting and members share their stories about how they came to AA. Right after the meeting, we chat further with the newcomers to explain how we run our meeting and encourage the newcomers to ask someone to be their temporary sponsor so they can actively start working the steps.
I'd encourage you to check out a number of different meetings and definitely ask someone to be your temporary sponsor. I wish you the best on your journey in sobriety and recovery!