KateAlice...
Well, that really stinks! I have a fair amount of loss myself, probably from my years working around loud bands and such. I know what you mean about the 'muddling together'; you can hear the sounds, but can't separate them into understandable words and phrases. I don't have tinnitus, and my loss isn't as extreme as yours, but it worries me all the same.
I have recently become friends with a person who is profoundly deaf, and have started trying to teach myself ASL. Fortunately there are some good resources on the net; message me if you'd like me to send you a couple of links.
And good luck...
Annie