Hi,
Stay away from High Voltage circuits until you have mastered the basics. Forrest Mims has written several great little books on electronics just for Radio Shack get them and start there, Good Luck
Hi,
Resistors affect BOTH current and voltage. Do not over think this, Ohm's law is the key. E = I x R
with this basic equation you can't go wrong. In series the voltage drop is different for each value of resistance with current remaining constant. In parallel the voltage is tha same to all...