To receive the sacrament, all Orthodox must be properly prepared. However, the method of giving and receiving communion differs between East and West.http://www.westernorthodox.com/customs
At Eastern Rite parishes, the priest stands with the chalice, and the people approach one by one. In Western Rite parishes, the people are stationery, and the priest moves from person to person. Churches often have a rail around the altar, where the people kneel down and say their final pre-communion prayers. Some people may continue to kneel while receiving the sacrament.
The leavened bread—baked into a thin round wafer—is given first, followed by the wine. To receive the bread, form your hands into a cup, one on top of the other, and hold them out for the priest to place the wafer in. This manner of receiving communion was described by St. Cyril of Jerusalem in his 4th century work On the Eucharistic Rite: Make thy left hand as if a throne for thy right, which is on the eve of receiving the King. And having hollowed thy palm, receive the Body of ChristÃƒÆ’Ã‚Â¢ÃƒÂ¢Ã¢â‚¬Å¡Ã‚Â¬Ãƒâ€šÃ‚Â¦ Other ancient sources prescribe this same method. For example, Canon CI from the Quinisext Council (692) states that ÃƒÆ’Ã‚Â¢ÃƒÂ¢Ã¢â‚¬Å¡Ã‚Â¬Ãƒâ€šÃ‚Â¦if anyone wishes to be a participator of the immaculate Body in the time of the Synaxis, and to offer himself for the communion, let him draw near, arranging his hands in the form of a crossÃƒÆ’Ã‚Â¢ÃƒÂ¢Ã¢â‚¬Å¡Ã‚Â¬Ãƒâ€šÃ‚Â¦ St. John of Damascus in De Fide Orthodoxa urges us to ÃƒÆ’Ã‚Â¢ÃƒÂ¢Ã¢â‚¬Å¡Ã‚Â¬Ãƒâ€šÃ‚Â¦draw near to it with an ardent desire, and with our hands held in the form of the cross, let us receive the body of the Crucified One.
Alternatively, you may open your mouth and the priest will place the wafer inside.
To receive the wine, lightly grasp the chalice in the priest's hands and guide it to take a sip. You may notice that after each communicant the priest or deacon cleans the lip of the chalice with a white linen cloth.
Hope this helps!