Always read the instructions on the firework.
Hold the sparkler in a gloved hand. Light the tip of the sparkler. They can take some time to light. Portfires are an excellent way to light sparklers.
Do not wave the sparkler close to other people or objects. Keep a good distance around you.
Additional Safety Tip: The wire of the metal sparklers gets EXTREMELY hot. Have a bucket of sand or water on hand to put the hot wires when the sparklers have finished.