Article: Use a tape measure to measure the width and length of the indoor space you want to cool. Then multiply the width by the length. Different air conditioners have different cooling capacities, so you'll need this information to select one that has the correct cooling capacity for the size of the space you want to cool. If there's no wall or door separating the space you want to cool from an adjoining room, add the area of the adjoining room to your calculation because the air conditioner will have to cool that space as well. The cooling capacities of all air conditioners are measured in BTUs (British thermal units) per hour. By looking at a unit's BTUs, you can know the area it is capable of adequately cooling. The higher a unit's BTU, the larger the area it can cool. The label or online description of a specific air conditioner will typically state what area the unit is capable of cooling. An air conditioner with a cooling capacity of 5,000 BTUs, for example, can cool rooms that are between 100150 square feet (9.313.9m2) in area. You'll need an air conditioner with a cooling capacity of 6,000 BTUs to cool a room that's 150250 square feet (1423m2) in area. For a comprehensive guide to what BTU rating most closely matches the size of your room, visit https://www.energystar.gov/products/heating_cooling/air_conditioning_room?qt-consumers_product_tab=3#qt-consumers_product_tab. Aside from the size of the space you want to cool, the amount of sunlight it receives and other factors will also determine the BTU rating you'll want to choose. Go with a unit with 10 percent higher capacity if your room receives a lot of direct sunlight. Buy a unit with 10 percent less capacity if the room you'll be cooling is heavily shaded. Add another 4,000 BTU if you'll be using the air conditioner to cool your kitchen. If more than 2 people will be regularly spending time in the room, increase the capacity of the air conditioner you buy by 600 BTUs per person.
Question: What is a summary of what this article is about?
Measure the area you need the air conditioner to cool. Find an A/C unit with the recommended BTU rating for your space. Get an A/C unit with a higher BTU rating if your space receives a lot of sunlight.

Problem: Article: The thought of going up to your crush to say hello might be making you nervous. To help yourself find the courage to go up to them, remind yourself that your crush is a person just like you are, and talking to them shouldn't be any different than talking to anyone else. Put on a smile, take a deep breath, and focus on showing confidence. Count to three if you notice yourself hesitating to talk to your crush. Once you get to three, go right up to them! If you see your crush while you're walking somewhere and don't have time for a real conversation, say hello and then their name so they know you're talking to them. Smile as you say hello and try to make eye contact, showing that you're friendly and would like to talk some other time. For example, if you see your crush as you're walking to your seat, say, "Hey, Adam!" with a smile and keep walking. Speak loudly and clear enough so that your crush hears you. Not only does making eye contact make you look more confident, but it also helps spark a connection between the two of you. Going up to your crush to say hello can be nerve-racking, but if you see a moment when they're waiting outside of class or chatting with 1 or 2 people, go up to them! There's no need to overthink the timing, and being proactive about it will make you feel more confident and in control. Avoid going up to them if they're talking on the phone. If you don't mind talking to them when they're with their friends, great! Otherwise, wait for them to be alone, like when they're at their locker or waiting for a class to start. This puts less pressure on you and makes the conversation flow more naturally. If you just want to say a quick, "Hi, how are you?" instead of a longer conversation, it's okay to talk to them when they're around others. You might say something like, "Hi Jack, I wanted to ask you how your soccer game went last weekend! Did you guys win?" If the conversation goes well or you just want to continue talking to them, ask for their phone number if you don't already have it. You could also add them on social media like Instagram or Snapchat to talk to them there too. After talking about interesting books, you might say, "What's your phone number? I'll text you the names of a few other books I think you might like."
Summary: Gather the courage to talk to your crush by giving yourself a pep talk. Give a quick hello when you pass them in the hallways. Go up to your crush when they're free to talk to avoid interrupting them. Wait until they're alone to talk to them in more depth. Ask them for their social media handle or phone number.

Dead Trigger 2 is a first-person shooting game, so when you move your cursor, it will turn your head into the direction of your mouse. Moving your cursor forward will make your character look up. Moving your mouse backward will make your character look down. Hit W to move forward. Hit S to move backward. Hit A to move to left. Hit D to move to the right. A navigation arrow will guide you to the goal of your current objective. It is a white arrow with the length of your current location to your objective. It is in the top of screen. In every mission, there is an objective. Follow the rules to go further. In the start of the game, the first objective you will see is to "Go to the Library." Move your cursor forward to get in there. Follow every objective to accomplish your mission. You will encounter these walking dead throughout your mission. Change your combat by keying letter Q. Close combat using melee weapon, like wrench, knife, crowbar, or chainsaw, is when the zombie is not aware of your presence. Just move closer to the opponent, and it will automatically attack them. Range combat using a weapon with ammo supports, such as handgun, shotgun, etc., is when the zombie will closely attack you. Aim the crosshair at the zombies, and it will automatically attack them. You can change your controls in Setting if you prefer tapping the left click of the mouse when firing. Before using these hotkeys, assign the items to the numbers first. In your journey, you will find Ammo Box. Replenish your ammo by aiming the crosshair to the box.
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One-sentence summary --
Move your mouse to look around. Use the keys W, A, S, D to move. Follow the navigation arrow. Follow the rules of the mission. Kill zombies. Click the numbers 1, 2, 3 to use items such as grenade, painkillers, or mine. Click "Tab" to exchange range combat weapons. Replenish your ammo.