The most basic form of candle magic uses a piece of colored paper that matches the intent of your candle. Decide what your goal is, and write it on the piece of paper -- just for an example, let's say we're going to do a money working. Write down your intent -- something like I will become financially prosperous. In some traditions, you would write your intent in a magical alphabet, such as Theban or Enochian. Because this is a money-oriented working, we would select either a gold or green piece of paper, and a candle of the same color. As you write down your goal, visualize yourself achieving that goal. Think about the different ways in which your goal might manifest -- could you be getting a raise at work? Perhaps someone who owed you money will arrive out of the blue to repay their debt.
Once you've written down your goal, fold the paper, concentrating on your intent the whole time. Some people like to say a small incantation as they do this -- if you're one of those people, this is a good place to do it. It doesn't have to be anything fancy. You can use something as simple as:
Extra money come my way,
I could use a little cash today.
Extra money come to me,
As I will, so it shall be.
Place one corned of the folded paper into the candle's flame and allow it to catch fire. Hold the paper as long as possible (without burning your fingers) and then place it in a fire-safe bowl or cauldron to burn the rest of the way on its own. Allow the candle to burn out completely. When the candle has burned out completely, dispose of it, rather than saving it to use again for another working. Usually there's not much left of a candle except a stub of wax, and you can either bury it outdoors or dispose of it in whatever manner you choose.