Soldering ipod touch 2g battery

ok, abousletely fail @ soldering.. never soldered ipod touch in life.. should start? need absouletly steps, noob friendly.. tinning soldering it.. have problems , tried 3 times , cant stick.. please tell me put soldering wire on soldering iron because cant melt either.. i'm not sure if im soldering on right side of battery

heres pictures far

solder on ipod



ipod touch battery front side ( did solder on correct side, @ fail solder on lol..)



soldering iron

 

if don't know you're doing, why soldering on machine's logic board @ all? that's great way permanently damage it.

 

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