It's the white phone on a green speech bubble icon. You'll find this in the top right corner of the screen, to the left of the button. If WhatsApp opens to a conversation, tap in the top left corner of the screen first. It's at the top of your Contacts menu next to an icon that resembles a person. Doing so will take you to the new contact creation page. If asked to select an app, tap the Contacts app and tap Always If you have multiple Google accounts on your phone, select the one you want to add a contact to. You'll do this in the "Name" field near the top of the screen. It's beneath the "Organization" field. If the number is from a different area, you may need to add an area code (e.g., "1" for the U.S. or "44" for the U.K.) in addition to the standard 10 digits. It's in the top left corner of the screen. Doing so will save your contact's information to your Android's Contacts app; additionally, if the person you added uses WhatsApp, you'll now be able to contact them from within WhatsApp.
++++++++++
One-sentence summary -- Open the WhatsApp app. Tap the speech bubble icon. Tap New contact. Type in the person's name. Tap the "Phone" field. Type in your contact's phone number. Tap Done.

They are located next to iron doors. Mine with your pick and walk over it to collect. This is the only position that it can take on a block. If not, it will need a redstone wire to send a charge through. A button can also be placed on the side of a furnace, chest, dispenser or workbench.
++++++++++
One-sentence summary -- Look for naturally formed stone buttons in strongholds. Place the button on the side of a block. Ensure that the button is placed next to the object requiring the charge (for example, a door). Place the button on other items.

Using a warm compress is one of the easiest ways to ease pain from a cyst and encourage it to drain as well. Get a clean washcloth and hold it under warm to hot running water. Then, wring out the excess water and apply the washcloth to your cyst. Hold it there for about five minutes or until the washcloth becomes cool. You can repeat this process several times per day. Use a mild soap to wash around the area of your cyst and allow the water and soap to run over the cyst. Try not to apply too much pressure to the cyst itself or you may irritate it or cause it to burst and this can lead to infection. If your cyst bursts or starts to drain fluid, place a clean, loose fitting cotton bandage over the cyst to catch the fluid. Change the bandage often and keep the area clean. Do not try to squeeze, pop, or puncture a cyst or it may become infected. This might be hard to do, especially if the cyst is bothering you, but popping or puncturing a cyst will make it worse and you may have scars as a result.
++++++++++
One-sentence summary -- Apply a warm compress. Keep the area clean. Place a bandage over the cyst if it starts to drain. Leave it alone.

Hold your hands open with your palms facing outward. The near string should be short, just the distance between your two hands. The far string should be very long. Bring your hands close together and use your left thumb to hook the string around itself. Return your left hand to its original position. There should now be a section of string extending from under your right index finger over to your left thumb. Mirror Step 2 using your right hand and the dangling left index string. Return your right hand to its original position, palm still down. The string should now make an X between your hands with a short near string across your index fingers and a long far string across your thumbs. Rotate your wrists so that your palms now face each other. A properly-formed Navajo Opening should be much less angular than Opening A. The nooses will be loose and wide. There should be two parallel strings oriented inward, one connected the index fingers and the other connected the thumbs. Underneath these two strings should be an X formed by two strings connecting the index fingers to the thumbs on opposite hands.
++++++++++
One-sentence summary --
Drape the string over both your left and right index fingers. Loop your left thumb under the right side of the far index string. Loop your right thumb under the left side of the far index string. Bring your hands apart to even out the string.