INPUT ARTICLE: Article: This is a blue app that has a white "A" with a white circle around it. It's most likely on your iPhone's or iPod's Home Screen. It's on the bottom of the screen. You can also tap an app on the "Featured" page, which is the default location to which the App Store opens, or you can tap Categories or Top Charts left of Search to look for apps based on different search criteria. It's at the top of the screen. Doing so will take you to a page listing any apps that match your search query. You can also tap the app's name below the search bar to search for it. If the app isn't free, you'll tap its price (e.g., $1.99) instead. If it's an app you already own but isn't on your device currently, you'll tap the download button (the icon looks like a cloud with a down-arrow) instead. This green button will appear in the same location as did GET. You may not always see this option for free apps, but you will always need to verify your account details before purchasing apps.  You can also scan your fingerprint if your iPhone supports Touch ID. If you aren't signed into your Apple ID, you'll also need to enter your Apple ID email address. Once it finishes downloading, the app will be on a page to the right of your iPhone's or iPod's Home Screen. You can tap OPEN in the space where GET was to open the app directly.

SUMMARY: Open the App Store. Tap the Search tab. Tap the search bar. Type in the name of an app, then tap Search. Tap GET to the right of your app. Tap INSTALL. Type in your Apple ID password. Wait for the app to download.

In one sentence, describe what the following article is about: Stretching your shoulder muscles provides a therapeutic type of massage and stretch. This is a worthwhile technique because you don’t need any equipment and can stretch your shoulder blades wherever you are.  Roll your shoulders and shoulder blades a few times, then swing your arms around in a circular motion to loosen them up a little. Try reaching your arms behind your back and clasping your hands. Or instead, put them on the small of your back and stretch by leaning backwards. Finally, get down on the floor and do a couple of yoga poses. A foam roller is a cylinder that looks kind of like a pool noodle, but it's much firmer. Foam rollers and tennis balls are great tools for massaging your shoulder blades. This is because they allow you to reach parts of your shoulders and back that you wouldn't be able to reach all by yourself.  Place it on the floor and lay with your shoulders on top of it. The roller should be at a 90 degree angle to your spine. Then move back and forth to use the foam roller to work out some of the tension in your shoulders and shoulder blades. You can use a tennis ball in a similar manner, by lying flat with a tennis ball under your shoulders and moving around to massage your muscles. " This triangle is the region between the top of your shoulder, your lower shoulder blade, and your upper shoulder blade. Focusing on this area will substantially relieve shoulder blade pain.  Use your hand or a handheld massaging device to massage your shoulder blade's triangle. The spot is very small, so massage your shoulders and shoulder blade until you find it. You'll definitely know when you hit it because you should feel instant relief, no matter where your shoulder pain is located.
Summary: Stretch out your shoulder blade muscles, while standing up or laying down. Use foam rollers and tennis balls. Focus on the shoulder blade's "triangle.

INPUT ARTICLE: Article: To create a Nether Portal, you'll need at least ten obsidian blocks. Make a hollow standing rectangle, 5 blocks high and 4 blocks long (corners are not necessary; you can use any block as a stand-in). Then strike the inside of the rectangle with flint and steel. The empty inner space should turn purple and start to make interesting sounds. Stand in the portal and wait 4 seconds to be transported into the Nether. Make sure you have your flint and steel for relighting the portal in case it breaks from a ghast and plenty of food to keep yourself well-fed. A Nether Fortress is a structure in the Nether that contains Nether Wart and a Blaze spawner.  They can be somewhat hard to find, so it could take a while. Blazes drop Blaze rods, which are needed for making potions and getting to the endgame. You will need a lot of Blaze rods. Nether Wart is a key ingredient in potions, and it only grows on Soul Sand, so collect some Soul Sand (it's brown with a face-like pattern) and try farming it in your base. Nether Wart can be found naturally occurring in nether fortresses in two small patches alongside stairs going upwards. This will let you brew potions, which will help during the final boss fight.

SUMMARY:
Build and light a Nether Portal. Enter the Nether. Find a Nether Fortress. Kill Blazes and gather Nether Wart. Craft a brewing stand.