Welcome, SierraRose--glad you found us here, altho sorry you're in a situation that makes it necessary.
Mellybug has given some good advice. I'd like to echo her suggestion to spend as much time as you can here and read the stories. Also make sure to check out the stickies at the top of the page. There's a lot of information there. This might be a good thread to start with:
http://www.soberrecovery.com/forums/...l-problem.html
You certainly are eligible for Alanon, as the only requirement to go to their meetings is that your life has been affected by someone else's drinking. Here's a link to help you find a meeting as well as some general info about Alanon:
http://www.al-anon.alateen.org/ Alanon can provide you with support in the real world as well as a lot of info about alcoholism.
All of us here have been in your shoes, and we understand how you can be doubting yourself even when confronted w/the "Tower of Empties", even when your gut tells you he IS drinking in spite of his denials. Chances are very, very good that your feelings are right and he is in fact continuing to drink. He doesn't sound as if he has any intention of finding recovery, from your description of things, and until he himself decides he has a problem and seeks help, nothing will change--or at least nothing will change for the
better. Alcoholism is a progressive disease, and it will get worse w/passing time.
Your best bet is to educate yourself and take care of yourself. Once you know more, you'll begin to see what you want to do and where you want to go. You sound like you have your head on fairly straight, so you have a leg up on where many of us started out from already! Good for you.
Again, welcome to SR, and I wish you strength and clarity as you move ahead.