Hi @Josie and welcome to the forum. Congrats on taking the first big step.
Thanks for sharing your story, I know it must be difficult but sounds like you thought this through. Start with considering all the support options - this forum, AA or other meetings, an outpatient/inpatient program, reading and videos. There is so much out there!
Here is a useful thread on getting through early recovery:
(Surviving Alcohol Withdrawal/Early Sobriety Techniques)
And recovery-related links that members have posted: