Set out all your parts to solder. Because the soldering iron is extremely hot, don’t lay it down while you are looking for the next part to solder. You can buy a soldering kit, which includes a soldering gun and base, sponge and solder. Or you may already have some components such as the soldering iron. Put on all protective gear.Plug in the soldering iron. Place the soldering iron in the stand. The soldering iron will take a few minutes to heat up. Only heat it up when you are ready to go. This prevents accidental burns or fires. Get your sponge wet and then wring out the water. The idea is to have a damp sponge, not one soaking in water.Check the manufacture’s instructions for the appropriate wattage for your specific electronics project. Electronic components require a certain amount of heat. Too much heat can melt the part you’re trying to solder. Soldering irons come in different wattage outputs, so check for proper wattage rating.
Source: How to Solder Copper Wire | eHow