Article: Multiply the amount of syrup by 5 to determine how much soda water to add. For example, mix 60mL (12tsp) of the syrup you created with 300mL (61tsp) of soda water to create a large glass of cola. Carbonated water and sparkling water also work as mixers. Mix the liquids until the cola has an even color. Stop stirring the cola once the liquids are combined, as over-mixing will cause the drink to go flat quickly. If you are using a thin glass, use a metal straw to stir the syrup and soda water. Cola tastes best when it is fresh, as the bubbles disappear quickly. Add 3 or 4 pieces of ice to create a cool and refreshing drink. Alternatively, enjoy the rich and undiluted flavours of the cola by itself. Avoid leaving the cola in a fridge to cool, as it will lose some of its bubbles. Pour the cola into a bottle and tightly screw on the lid. This helps to minimise the number of bubbles that can escape from the cola. The cola tastes best the day you make it; however, the drink will still have some bubbles for up to 4 days. Clean recycled soda bottles work well for storing cola.
Question: What is a summary of what this article is about?
Pour the syrup and soda water into a glass at a 1:5 ratio. Stir the syrup and soda water with a spoon. Add ice to the drink or enjoy it on it's own. Store leftovers in an airtight bottle in the fridge.

Hold the Nook upside down and locate the micro USB port, which is located next to the speakers and the audio jack. It looks like a rectangular hole that you plug a cord into.It is about inch (.6 cm) wide. Hold the Nook securely with the screen against your non-dominant hand. Place the palm of your dominant hand in the middle of the back of the Nook. Use heel of your hand to create leverage when you pry the back off. You'll find a small notch on the bottom of the back cover, right by the USB port. Slide the fingernail of your middle finger over that notch. Place your other fingernails in line with the notch along the bottom edge of the Nook. Gently pull at the notch with your middle finger and press against the back with the palm of your hand. As the cover starts to come loose, slide your fingers down along the edge to remove it completely. Pull the cover off slowly so it does not bend or break.
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One-sentence summary --
Locate the micro USB port. Place your palm against the back of the nook. Hook the notch over the USB port with your fingernail. Pry the back cover off.