@seeker But, sorry, a noob question. I plug the USB with the roms (zipped), anyone in its folders, and when I turn on the Raspi, all the roms will be transferred to Retropie, isn't it? Well, I have to wait the yellow light stops blink. But, I waited near six hours :S and it continues blinking. I turnoff the raspberry. Is it normal? I'm really sorry to ask something so simple, but... I suppose I'm very clumsy. And I was looking for an answer, but nothing.
Thank you.