ey , hello i want to solder a resistor too!

, but first one question or two;
Also hardware , what more do i need , i mean i have a kobo glo , last FW , do i have to install something to controll the brightness once i have done the circuit? i dont saying its easy because i never do it , so just wanted to know. First aff all i have to buy the things that i need, So what do you recomend 30k or 33k resistor , or ohm like akorx user, thank you.