Article: Pop the hood on your vehicle so you can access the tank. Locate the tank's spout, which has a cap with a picture of windshield wipers on it. Turn the cap counterclockwise to loosen and remove it. Set the cap aside somewhere it won't get lost. The tank location varies between vehicles, so check the manual if you have trouble locating it. Check for a compartment in or around your trunk if you're refilling a tank for a rear windshield.
Question: What is a summary of what this article is about?
Unscrew the tank's cap.

Problem: Article: People often don't know about a problem unless it's directly affecting them. If you know of a water crisis happening in a nearby community, get on social media to see how you can help. Look for ways to join people who are already taking action, or start your own group. Ask for volunteers on your social media page to help you start a group dedicated to helping a particular affected region. Ask people in surrounding areas to donate water in jugs to designated drop-off centers within the affected area. Contact companies and businesses on social media and ask them to donate or help transport water to areas that are running low. Start a fundraiser to benefit a specific non-profit that's working to alleviate a clean water crisis in a specific area. Organize a small concert, open-mic, or talent show where people have to pay for admission and you donate the door money to a specific group. The groups Blood:Water, Lifewater International, and Water for Good are groups that partner with underserved communities facing water crisis in Africa. Generosity.org brings safe water to areas in Haiti, Ghana, Uganda, and India. Convoy of Hope and the Flint Water Fund are organizations helping with the crisis in Flint, Michigan. Bring your knowledge about the global water crisis to people who want more information. Choose a place to host your event. Plan out the information you want to share and invite guest speakers who are knowledgeable about the subject to speak at your workshop. Once you have some guest speakers interested, get them to commit to a date for your event. Create flyers to advertise your event and hang them up nearby the event's location. Create an event page on social media and invite people to come. Consider providing some refreshments during the event by making them yourself or asking for donations from a local restaurant or cafe. Be sure to provide resources like pamphlets, phone numbers, and websites for various ways people can help after they leave your event.
Summary: Start a social media campaign to help communities in need. Raise money at school or work to donate to communities without water. Host a workshop to educate people about the water crisis.

Never dive alone; make sure you have a partner who will be with you the entire time you are in the water. The "buddy system" is essential to freediving safely. Your buddy is responsible only for you and you are responsible only for them. One partner is always on the surface monitoring the diver and ready to provide aid if necessary. These are crucial pieces of equipment for freediving, and it is important to choose masks and snorkels that are comfortable and securely fit your face. An air mask should be low volume. When freediving, you will need to equalize which involves exhaling through your nose to balance the pressure. With a low volume mask, you don't not have to exhale very much to equalize; this means you use less oxygen. Air masks should be made of tempered glass so they withstand the water pressure without breaking, and they should fit securely to your face. To test the fit, hold a mask to your face then breathe in gently through your nose. If the mask remains on your face after a few seconds, it is a good fit. Snorkels should be easy to remove and comfortable to wear. For convenience sake, look for a snorkel that will attach to your mask. Fins are another important part of freediving gear. They help you to move efficiently under the water. There are two types of freediving fins: bi-fins and monofins. Most beginners should start with bi-fins. These resemble scuba diving fins but are longer. Most beginners choose soft or medium-soft blades. Make sure they fit securely and are comfortable, as you will wear them throughout the entire dive. A monofin is a single fin that you place both feet in, like a mermaid tail. They are more effective than bi-fins, but much harder to master. Weight belts are belts designed to have diving weights easily clipped to them. These weights prevent you from floating to the surface as you dive. Lanyards are used to attach you to the line. This helps guide your descent, and it is an important safety device. If you black out or need assistance, your partner can travel down the line and know precisely where you are located. Not all freedivers use weights or lanyards, but they are useful pieces of equipment, especially for beginners. If you are diving with a class or group, a line or buoy will most likely be provided. If you are diving in cooler temperatures, an exposure suit and gloves will be necessary.
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One-sentence summary --
Find a buddy. Buy your air mask and snorkel. Purchase your fins. Buy your weight belt and lanyard.