To begin soldering a wire to a specific point of a circuit board you will need to apply flux to the point on the circuit board this can be done using a cotton swab or tweezers. After this is done take your soldering iron and soldering wire and make a small solder ball on the point. This will look something like the second picture. If your ball is too big and bridges another point go in with the solder sucker and suck a little bit of the solder out so the ball doesn't interfere with any other points. The next step is to strip one side of the wire and expose part of the copper. If your wire isn't pre-tinned and it is a brownish color what you need to do is melt a little bit of solder wire with the soldering iron onto the exposed part of copper. This is needed to tin the wire in a coating of solder to make sure a good connection is made. Now the final step is to line up the wire to the point like the third picture and take your soldering iron in your other hand and melt the solder ball you made earlier and stick the wire at the part that is exposed into the solder ball. This works because the solder ball liquefies when it is exposed to too much heat. Once the wire is stuck in firmly all you have to do is remove the soldering iron. The wire should now be stuck in the point like the final picture give the wire a very light tug to make sure it is actually in. If the wire comes out just repeat this process till you get it right.
