yeah, there are differnet types of solder. If you're having problems with it not sticking, you may have to find what is called "flux" (spelling?) If you dip the leads of the LED into the flux first, the solder will stick much easier. And you'll need a 330 ohm resistor... the colors will be orange, orange, brown... you can ignore the 4th color band...that's the tolorance level.