Here are some game rules/aspects to note:
1. Ultimate is a non-contact sport (not even blocks or picks are allowed)
2.. Once the disc is caught, the player needs to establish a pivot foot. This is done by coming to a stop (if running) at a reasonable distance (no limit to the number of steps), and then keeping one foot on the ground (like basketball).
3. Defense is usually man-to-man.
4. The person with the disc has 10 seconds, while being guarded. The defender will count "stalling 1.... 10)
5. Typically, the defense will "force" the offense in a certain direction (e.g. "Home" or "Away"); Defenders will "mark" (i.e. defend) their opponent on one side, in order to prohibit the completed pass down field.
_____Quick Links______
Ultimate Rules:
http://www.ultimatehandbook.
How to Play:
http://www.wikihow.com/Play-Ul