how to end the game?

hi there..
finally i bought my x box with halo, of course. man.. halo is really a good game. i played with my brother in a cooperative play. it was gorgeous!!!. i have problem.. how to shut of the console? i mean. to stop the game i press 'start' button, then i quit game. then what??? just press the power button on the console??
thanks guys.

Whenever I want to stop playing I just press the power button.

Here's the safe way. End the game. Open the disk tray, take out the game and close the tray. Then power it off. If you leave a game in the system and it gets moved, it might scratch your disk or screw something up inside the tray.

If i get a new game...i know ill be playin it for a while so i keep it in the xbox and just turn it on/off and never take it out untill im sick of playin it ;)