Manual and automatic control  of a steppermotor

Hello!
I would like to control a stepper motor in a certain in what we could call manual and automatic mode. I am totaly new to the ardinio-world and wonder where to begin.

In manual mode it would work like this
1 knob/potentiometer and the steppermotor moves accordingly.
1 knob/potentiometer controlling/tuning how much the steppermotor turns compared to the knob above

In automatic mode it would use (the same as above and extra buttons)
1 knob/potentiometer to manualy (move the steppermotor) to control the setting of the start and stopbuttons below
2 controlling buttons to set where the start and stop is
1 potentiometer controlling the speed
1 button to start the sequence

Thankful for any help!

I am totaly new to the ardinio-world and wonder where to begin.

Start by looking at the stepping motor an pot stuff in the playground:-

http://www.arduino.cc/playground/Main/InterfacingWithHardware#Output

And there's already an example for what you are asking about -