Summarize the following:
In order to mine obsidian, you'll need a Diamond Pickaxe. You'll need three diamonds and two sticks to craft the Diamond Pickaxe.  If you want to build a Nether Portal without a Diamond Pickaxe, you can build a "mold" using other materials and create obsidian in the correct shape for the portal. Click here for instructions. See Find and Mine Diamonds Fast on Minecraft for tips on finding diamonds. Obsidian is created by pouring water onto lava. One bucket of water will create one block of obsidian. You'll need at least ten blocks of obsidian, and you'll want to have extra water on hand in case something goes wrong, so pack accordingly. You'll need to find some lava to turn into obsidian. Lava typically occurs deep underground, though you can stumble across a lava lake anywhere in the world. You'll have a very good chance of finding lava on level 1-10 above the bedrock, as all air pockets are replaced with lava at this elevation. The principle here is to spread the water over the lava blocks. Any water the lava comes into contact with will become Obsidian. The tip here is maximum coverage. By doing so, the Obsidian underneath will be revealed. You need 10 to make a portal. Rinse and repeat the water bucket trick as necessary.  Note that mining obsidian takes a very long time (9.4 seconds). You can speed this up with the "Efficiency" enchantment. If you're standing in the water, be careful that the flow doesn't push you into the exposed lava. You'll likely want to build the frame near your home so that you can easily resupply when you return from the Nether. The frame needs to be at least 4x5 blocks, but you don't need the corners, meaning you'll need ten blocks at minimum. Place two obsidian blocks next to each other on the ground, and then place a placeholder block on each end. Place three obsidian blocks in columns on each of the placeholder blocks. Put a placeholder block on the top of each column. Place two more obsidian blocks between the top placeholders. You can now remove the placeholder blocks to create the corner-less frame. The inside area should be 2x3 blocks of empty space. You can light the portal with anything that creates fire, but Flint and Steel is the most reliable. The middle of the portal will glow purple when activated. Depending on how strong your device's processor is, you'll be transported to the Nether in 4 seconds average. You can abort the teleport by stepping out of the portal, though it may be too late when your player's vision starts getting distorted. A return portal will be created in the Nether where you enter. Make sure to bring your Flint and Steel with you into the Nether. A Ghast can put out your return portal, requiring you to re-light it. That being said, you might have to consider bringing extra obsidian, probably another ten blocks, in case a ghast breaks or destroys the portal (although that is not common considering the strength of obsidian).

summary: Craft a Diamond Pickaxe. Fill some buckets with water. Find lava. Pour a water bucket on the side of the wall, over the lava blocks. Collect the source water block using an empty bucket. Using your Diamond pickaxe, mine the Obsidian. Build the frame for your Nether Portal. Light the portal with Flint and Steel. Stand in the portal for a few seconds.


Summarize the following:
Depending on what your shoes are made out of, you will need to either dampen them or heat them up. This method will work for most materials, including synthetics. Keep in mind, however, that leather stretches more than synthetic materials, such as vinyl and fabric.  Dampen leather or fabric shoes. Warm water is the easiest, but can stain or discolor the leather. A leather stretching solution would be safer, if you can find it. Heat shoes made from vinyl or urethane with a hairdryer. Keep in mind that this can damage some vinyl or urethane surfaces. Don't worry if the stretcher appears too small. You want it to fit loosely inside the shoe. If you have bunions, consider popping in the bunion attachment into the shoe stretcher first. Keep turning until you see pressure on the surface of the shoe. Don't overstretch your shoe; three or four turns will do. You can always repeat the process again if the shoes are still too snug. While the shoes dry/cool down, they will keep that stretched shape. Turn the knobs counter-clockwise until the shoe stretcher returns to its original size. Pull the shoe stretcher out. If the shoe is still too snug, repeat the process again. Keep in mind that some materials, especially synthetics, may return to their original size over time. If that happens, simply re-stretch your shoes.
summary: Prepare the shoes for stretching. Slip a shoe stretcher inside the shoe. Twist the knobs clockwise until the shoe stretcher fits snugly inside the shoe. Leave the stretcher on overnight. Loosen the stretcher and pull it out the next morning. Try the shoe on to see if it fits.