I bought some Kool Stop pads today...got the black ones for dry conditions because it won't be wet around here again until October or November. Plus that's all they had at REI

Are these pads something I can put on the bike myself or do I need to take it to the LBS? I'm kind of afraid I'll do it wrong and I don't want to end up with brakes that don't work. If it's easy and relatively fool-proof, I'll do it. As usual, here I am, a big newbie looking for more advice!