Ok I think the best thing for me to do is to start off new here and forget everything I asked.
You know I want to have a LED light up and I will be useing a 9. Volt Battery.
The LED needs 2 Volts at 40 mA to light up. And I know the 9. Volt Battery will be to mutch for it.
So to findout how mutch Resistance I will need I will use Ohms Law.
E over I = R
E = the Voltage 9 Volts and the I = Current that will be the Load 40 mA
So 9 Divided by .040 will be my Resistance YES or NO??
Just tell me if I have this mutch right if I don't just tell me NO and I think I will get it.