Use a Soldering Iron

Wet the sponge

This will allow you to clean it off when you get a lot of burnt solder on it

Turn on the Iron

This will just help you, well, melt the solder

Clean Clean Clean!!

I cannot stress how important it is to clean the iron, or it will corrode and be useless, clean it up!

Tin the Tip

This is where you put solder on the iron for better heat flow and a cleaner tip

Now for the soldering

Put the wires together or parts in the board, and solder the two together

Clip the leads

This will allow for the next step to be easier

Heat shrink

This is the fun part. But be careful, the flame is hot and you can burn yourself!

Turn off the iron.

This will keep it from burning itself out.