<human>: Provide a brief overview of the text.

So some back story...
My brother (17) has been drinking and using drugs since he was 15, maybe younger I'm not 100% sure because it's only speculation from my sister. 
This last year especially has been difficult. He continuously lies about drinking and my Mom finds large empty bottles of some sort in his room or in the trash outside. Countless times he's finished off my Mom's bottle of wine and lied about it. He's even been hospitalized for alcohol poisoning. So I understand that he has a problem and that he needs help.(He's mentioned to me once that he thinks he's an alcoholic)
As far as drugs go I know that he does acid, mushrooms, ecstasy and smokes a lot of weed. And I believe he mentioned that he has used prescription drugs.
He's still drinking and doing drugs and this past weekend my Mom caught him finishing off a bottle of vodka so as punishment she turned the internet off. That turned into a huge fight and ended with my brother going to a friends. This was on Friday and he still hasn't come home. My Mom feels that she has tried everything but he is still defiant, disrespectful and thinks she is simply controlling. So she has decided that a change of scenery is what he needs (I agree) and he is coming to live with me. My husband and I are going to sit down tonight and come up with ground rules for him. I don't want to mother him because I'm not his mom I'm his sister, so how do I go about all of this? 
I'm so overwhelmed and I'm not exactly sure where to start.
How can I encourage my brother to get the help he needs?
Any advice is greatly appreciated.
<bot>: Mom is sending my little brother (17) to live with me so that I can help him address his addiction and get him the help he needs. Looking for advice.