I'm guessing you're questions are pretty much based on RAN 
Anyways, to answer your questions......

The mobs in ge do not drop gold, they, however, drop loots which you should often pick it up to sell them off or if you find a weapon which is imbued with really good stats which  are normally those that increases your attack strength or your attack speed or they might come together. If the weapon has stats that are very demanding, you can just sell it off.

As for skill canceling, i believe classes like Warlock and Warlock can be done so, that is if you're fast enough. However classes especially the Fighter can't be done as their skills are more like auto lock on. Meaning to say, when a Fighter cast his or her skill on you, you're totally immobilized till the animation sequence of that skill ended. A Musketeer has a few skills that have does the same thing as a Fighter.

;P

lol, like what miyabi said.

IGN : Katayoku
If you guys are looking for a guild, our guild RakiChanneru would be happy to welcome you aboard.

Though i wouldn't be around for the time being due to like what Miyabi said again, busy playing Odin Sphere haha.

Just PM Brie if you wanna join. The co-leader.