In order to prevent strain on your hands, back, neck, and other joints, you'll want to sit at the keyboard with good posture. Sit slightly reclined in your seat, allowing the chair to support your lower back. Ideally, your elbows should be angled down slightly to promote circulation. Your feet should be planted firmly on the floor. Standing desks are growing increasingly popular, but an improper desk can promote bad posture. Your standing desk should be elbow-level or just slightly lower. Your monitor should be eye-level to keep you from hunching over, and should be around two feet from your eyes. When typing, your keyboard's spacebar should be centered to your body. This will help keep you from having to rotate to reach the keys. Your hands should float above the keys while you type. This will help you reach keys by moving your hands instead of stretching your fingers. Resting your palms or your wrist on the front of the keyboard and stretching your fingers promotes carpal tunnel syndrome Most keyboards are fairly sensitive and don't need much pressure for the key to register. Lightly tapping keys will help keep your fingers active and will improve your speed. Keep your wrists straight as you type. Twisting your wrists can cause discomfort and unnecessary stress. When you're not actively typing, rest your hands. Keeping your hands tense when not typing can increase stiffness and soreness later.
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One-sentence summary -- Sit with good posture. Center the keyboard. Avoid resting your palms or wrist. Use a soft touch. Relax your hands when you're not typing.

Go to your printer manufacturer's website and select the appropriate printer model and computer operating system. Then, follow the on-screen prompt to update or reinstall your driver. Note that you may need to uninstall the driver beforehand. Your printer manufacturer's website can most likely be found in the printer manual. Bookmark and check the website regularly to make sure you don't miss an important driver update in the future! If you're trying to print from a computer wirelessly over Wi-Fi, you'll need to make sure that your printer has been logged in to the same network as your computer so that the two can connect and the printing job can be sent from your computer to the printer. If your printer is near your internet router, you can connect it to your internet by connecting it to the router via ethernet cable. You can also connect your printer directly to your computer with a USB cable, if you'd rather avoid dealing with Wi-Fi connections entirely. If you want to print something off of your mobile device, you'll have to download and use the app that the manufacturer of your printer developed to be used specifically with its products and with your type of phone. If you have an Apple device or a Mac with a printer attached, you'll probably have to use either AirPrint or Printer Pro to print directly from your iPhone, iPad, or iPod Touch. Other common apps or softwares used to print from mobile devices include PrinterShare, Epson Connect, Mopria Print Services, and Google Cloud Print. Ultimately, if you haven't been able to determine the issue with your printer on your own, using the printer troubleshooter on the computer connected to the printer will be your last best chance to identify and resolve the issue. If this doesn't work, you may need to consult a professional.
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One-sentence summary -- Update or reinstall your driver. Make sure your printer is connected to your Wi-Fi network. Use the right mobile app to print with your mobile device. Turn to your troubleshooter if you can't solve the problem yourself.

Pick a note you can sustain easily, but opt for one that is high enough to fall within your falsetto range. The pitch should be the highest one you can sing in while sustaining it without tension. Falsetto screaming is usually easier to learn than screams done in your normal vocal range. With this technique, you can learn to insert individual screams into songs or scream out lyrics. To help yourself with this step, consider playing the note you sing on a pitch wheel, keyboard, or guitar. There should be absolutely no tension on this note. If you have to push yourself to make and sustain it, drop down a pitch further and try again. Once you figure out which pitch to go with, attempt to sing it out for as long as you possibly can without straining your throat. Ideally, you should aim to hold it for 30 seconds. Keep practicing until you can hold this pitch steady for the full 30 seconds. Holding it steady means that there should be no cracking, wavering, or other variances in pitch or tonal quality. Take a sip of lukewarm water, but instead of swallowing, begin to gargle it while making the same "ah" sound as you made earlier. Keep the same note and pitch. Pay close attention to the vibration of the uvula. The uvula is the piece of flesh hanging down from the back of your mouth. This vibration will be what you will rely on when creating a raspy scream voice. Continue gargling on the "ah" sound until you can commit this vibration to memory and feel comfortable with it. Essentially, you will be trying to create the same sound you made while gargling the water without actually gargling water anymore. Make the "oo" sound while directing air toward the soft palate of your mouth. The breath pressure should be directly applied to the top middle part of your mouth. This is the same "oo" sound as the "o" in "shoe." The soft palate is the soft tissue found at the roof of your mouth. This action should cause the uvula to vibrate as it did before. The resulting sound should be similar to the coo of a pigeon. Make sure that this is sung in the same pitch as before, and that you can sustain it for 30 seconds without the sound becoming uneven. This technique teaches you to place your tone in the soft palate, which is essential if you want to safely sustain a long scream in a song. Sing the "ah" sound in the same pitch and on the same note as before, making sure that the note is still consistent. Direct more air toward the soft palate to activate the uvula, creating a distorted "scream" note. You can direct as much air to the palate as you want as long as it does not result in straining. Manipulate your tongue, throat, and breathing using this same technique to produce different vowels, consonants, and sounds. You will need to practice a little at a time over the course of a couple of weeks before you can really master this scream. Take your time to avoid damaging your throat. If you take your time, it could take several weeks of consistent practice before you master this scream. You should still practice this slowly to avoid ruining your throat, though. If your throat starts hurting as you practice, stop and drink something warm. Warm tea with honey is especially good at this point. Only continue with your practice when your throat feels completely fine. With enough practice, you should be able to create raspy, screaming tones without relying on the uvula. You should also be able to apply this technique to the rest of your vocal range, instead of only your falsetto voice.
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One-sentence summary --
Sing the "ah" sound in falsetto. Sustain the note for as long as you can comfortably do so. Gargle a sip of water as you make the "ah" sound. Change to the "oo" sound. Switch back to the "ah" sound but use the new technique. Practice.