BusyHSMom has a very clever & new-to-me method of starting at the center of a piece -- a few rows of I-cord make a temporary start in disposable yarn. After you have a comfortable start, the original "belly button" vestige comes off and you thread the starting tail through the first few loops to close the center. Good clear photo tutorial
Este es el inicio de cualquier tejido circular a cuatro agujas. Como gorro, calcetín, etc..