Scuba diving may appear to be simple, but there is a lot of information about technique and safety that you need to know before beginning. Making a mistake while freediving can be dangerous or even fatal.Taking a class from a qualified instructor will ensure you learn how to freedive correctly and safely. Freediving incorrectly can lead to ear, sinus, and lung damage as well as decompression sickness, blacking out, and even drowning. Major freediving organizations like AIDA International, CMAS, or SSI Freediving have lists of certified instructors that teach students all over the world. Use these sites to find a class in your area. Many courses offer introductory classes in a pool. The pool sessions will teach you how to properly control your breathing. These classes also instruct you in the static and dynamic apnea techniques to build up your body's tolerance to carbon dioxide. These disciplines are essential to freediving. Swimming with fins, or finning, is a crucial skill for freediving. scuba divers usually use three kicks: the flutter, frog, and dolphin. The specific stroke does not matter as much as becoming comfortable swimming and kicking while wearing the fins. The flutter kick is the most basic kick. It is the kick used in the freestyle stroke; both legs are kept parallel, and they flutter up and down. Keep your legs straight and your toes pointed as you kick. A frog kick is when the legs are bent at the knees and extended outward and then brought together. The dolphin kick is perhaps the most difficult of the three. It is the kick used in the butterfly stroke. The legs are kept together and move up and down. As they move up, the knees bend,and then straighten as the legs move down. It is called a dolphin kick as it imitates the way dolphins move through the water. This is the most efficient way of diving down to depth without the use of weights or a rope. Begin on your stomach, with the buoy by your hips. Put both arms in front of you and dive forward. Bend at your hips to create a right angle and keep your legs straight; imagine you are trying to touch the bottom of a pool. Raise both legs out of the water, and make your body straight again. This creates the momentum to propel you under water. As soon as you raise your legs, bring both arms to the side of your body in a scooping, breast-stroke movement. You should be completely under water at this point, and you can begin finning to continue your descent. Learning to equalize is absolutely essential for all freedivers. Water is much denser than air so it exerts greater pressure on your body. The deeper you go, the higher the pressure. There are air spaces in our bodies, and these spaces get smaller as the water pressure increases. Therefore, it is necessary to add air to these spaces; this is called equalization. To equalize, use your fingers to seal your nose and blow out. Equalize often and don't wait until your ears hurt to start. Failing to equalize can cause serious injuries. These sessions focus on teaching proper buddy procedures, and they are also where you will learn the free immersion and constant weight techniques. Each class varies, but generally the goal of an introductory open water course is to successfully complete a free dive of 10 meters (30 feet). The instructor will oversee and troubleshoot your first dives. That way they can ensure you have the correct equipment and are using the correct techniques. Instructors are also trained to intervene and assist if a problem arises.
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One-sentence summary -- Find an instructor or class. Start in the pool. Swim using the fins. Practice the duck dive. Equalize the pressure. Take open water courses.

To create a truly decadent cookie dessert, combine about 3 cups (300 g) of crushed Oreos with 8 ounces (226 g) of softened cream cheese. You can then roll the mixture and cut it into cookie shapes or roll the mixture into small balls. Dip the balls in melted chocolate to make Oreo truffles. Keep the cookie balls or truffles refrigerated until you're almost ready to serve them. Instead of using graham cracker crumbs in your favorite pie crust, replace them with crushed Oreos. Once you've pressed the crust into the pie plate, you can refrigerate it for at least an hour before you use it or briefly bake the crust so it becomes crisp. Consider using an Oreo crust for one of these desserts: Chocolate peanut butter. Cheesecake. French silk pie. Chocolate pudding pie. You can always make a dessert look a little fancier by sprinkling some crushed Oreos over it. Scatter a few tablespoons of the crushed cookies over cupcakes, cakes, whipped cream, ice cream, brownies, or hot cocoa. You can make your own homemade ice cream and churn it in a machine. Add the crushed Oreos during the last few minutes of mixing. Or buy a carton of ice cream and let it soften a little. Stir in as much of the crushed Oreos as you like. You can eat the ice cream soft or return it to the freezer to harden a little. You can easily make Oreo milkshakes by combining 3 scoops of your favorite flavor of ice cream with 1 cup (240 ml) of milk and about 1/2 cup (50 g) of crushed Oreos.
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One-sentence summary -- Make cookie balls or truffles. Use crushed Oreos in pie crust. Sprinkle the crushed Oreos as a garnish. Mix crushed Oreos into ice cream.

You can find a score card online, such as this one: https://500rules.com/score-card/. The score card tells you how many points are awarded for each different suit and their coinciding bid number. If you won the bid and won the number of tricks you bid, then you would use the score card to add that specific number to your score. If you won the bid but didn't win the right number of tricks, you would subtract the score card's number from your total score. For example, if your bid was 6 Spades and you won all 6 tricks with Spades, you would add 40 points to your score, according to the score card. If you bid 8 Diamonds and didn't win all those tricks, you would need to subtract 280 points from your score according to the score card. Keep a piece of paper and pencil next to you to keep track of the scoring, if necessary. Continue playing hands and adding up the scores until a team earns 500 points, or a team has negative 500 points or less (meaning they've lost). The first team to earn 500 points wins! For each new hand, rotate the dealer to the left.
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One-sentence summary --
Use a score card to calculate the points in each hand. Add or subtract points depending on your bid. Win the game by being the first team to earn 500 points.