hi

I am new to this great game LOL and find it really addictive and really annoying, I am looking for help on playing the game and understand the rules, what I don't get is I could be geran and someone on the other team can also be him buy yet they always kill me, how can this be when we are the same play, I try to kill him but yet im having no joy, please can you explain how this can be and give me some tips?

Thanks