The way I've always understood it, a crowd is simply a large group (of people). That's it. An audience is a crowd of people brought together to watch, listen, or just experience something together, usually something performed.

Me encanta como se ve la palabra equitativamente. ^o^

This one's a toughie. o: Try placing your tongue on the roof of your mouth, then let air out from there. I know a lot of people speak Japanese, too. If you know a bit of Japanese, then try pronouncing Spanish's Rs like Japanese's.

Fluently? Just English and Spanish. ^^

I've always seen "ya ves" used as... "you see." So asking it ("¿ya ves?") would be the equivalent of... "you see?" For example: Let's suppose a friend of yours thought he could get away with lying to his teacher. You try to advise him against it, but your friend, being as caprichoso as ever, still lies to his teacher. He winds up getting caught in his lie, and you tell him, "¿Ya ves? ¡Te dije que le caía muy mal eso de mentir!" "You see? I told you he really hates lies ( / lying)!" Something like that. At least, that's how everyone around here uses it. I'm not sure if that's how it's used everywhere else.

I'm a native Spanish speaker, so I don't know what it takes to learn it. I would recommend learning the pronunciation. Several native speakers pronounce Spanish in very different ways, so find way that you like and stick to it. For example, where I live, the Zs are pronounced like an English S. I've heard some from other parts of the world pronounce Spanish's Zs like English's TH. ^^ Good luck!

I had a crazy weekend, haha. I was fine; how about you? :]

I'm not sure, but I think it would be something like... "The inside of a gun spews out political power." I think. I'm really not sure. ^^'