HELP!! RECORDING!!! SETTING BARS!!!

so when i try and record it starts overdubbing and looping way to fast,(i believe at the 2nd bar?) how do i set the bars in sequence or track mode?? thanks.Im new to this shit...

Sequence>paramaters

http://www.akaipro.com/mpc500

Get the manual and read it. Or get familiar with the Search function.

Ah thanks alot guys! Ive been recording my stuff all live for the past week,now to get the bars right ;]