-You could use eGold, Money bookers, Wetern Union.
-Go to Paypal.com and register there
-I'm not sure about this, You might be able to do it yourself, but I would recommend using R2Pleasent, GPKing of Sythe.
He will offer you a FULL money back guarentee on your gold, if he dies on your account he will try it again and again, at his own expence.
He is VERY trusted on Sythe and he has dealed with many people, and sold around 30Billion gold. Personally, I'm going to be buying 10-20m from him soon
-By using R2Pleasent.