to adjust your idle, there is a flat head screw (not actually a screw) that is on your throttle body and sits just above your intake pipe. It may be sealed so you may just see the circle where it is covered with some sort of sealant. If you have that then just scrape it out to expose the flat head screw.

Turn it counter clockwise to open your throttle a bit more and increase the idle rpm. If you want to start from scratch, turn it clockwise until closed all the way then open it again by turning counter clockwise until it idles where you want it... it's usually about 3 1/2 turns... don't do too much more than that or your idle will jump around when the motor is warm.

You'll of course want to wait until the motor is warm before adjusting the idle.