Summarize the following:
Click or double-click the Chrome app icon, which resembles a red, yellow, green, and blue sphere. Go to http://addoncrop.com/youtube_video_downloader in Google Chrome to do so. It's on the right side of the page. The YouTube Video Downloader ZIP folder will download onto your computer. Depending on your browser's settings, you may first have to select a save location before the folder will download. Do the following depending on your operating system: Windows Double-click the ZIP folder to open it, click Extract at the top of the window, click Extract all in the toolbar that appears, and click Extract when prompted. Mac Double-click the ZIP folder to prompt it to begin extracting. It's in the top-right corner of the Chrome window. A drop-down menu will appear. This is in the drop-down menu. Selecting it prompts a pop-out menu. You'll see this option in the pop-out menu. Doing so opens the Extensions page. It's in the top-right side of the Extensions page. Doing so prompts the switch to turn blue {"smallUrl":"https:\/\/www.wikihow.com\/images\/2\/28\/Android7switchon.png","bigUrl":"\/images\/thumb\/2\/28\/Android7switchon.png\/35px-Android7switchon.png","smallWidth":460,"smallHeight":394,"bigWidth":"35","bigHeight":"30","licensing":"<div class="mw-parser-output"><p>I edited this screenshot of an Android icon.
<\/p><p>License: <a rel="nofollow" class="external text" href="http:\/\/en.wikipedia.org\/wiki\/Fair_use">Fair Use<\/a><br>
<\/p><\/div>"}, signifying that you can now install extensions from folders. It's in the upper-left side of the window. Doing so opens a file selection window. If it isn't already open, double-click the folder that has the same name as the ZIP folder you downloaded. This folder is inside the extracted folder. Clicking it once selects the folder. Doing so uploads the folder to Google Chrome, thus installing the extension. Go to https://www.youtube.com/ in Google Chrome. This opens the YouTube home page. Search for a video by entering its name into the search bar and pressing Enter, then click the video you want to download to open it. Click the downward-facing arrow below the video to do so. This will prompt the highest available quality version of the video (excluding 1080p) to begin downloading onto your computer. You can also click to the right of the video and then select a different quality. This will run the video through a third-party conversion website before downloading it, so do this at your own risk. Depending on your browser's settings, you may first have to select a save location or confirm the download before the video will actually download.

summary: Open Google Chrome. Open the YouTube Video Downloader extension site. Click Download for Chrome. Extract the downloaded folder. Click . Select More tools. Click Extensions. Click the grey "Developer mode" switch . Click Load unpacked. Expand the extracted YouTube Downloader folder. Click once the "YouTube Video Downloader - 15.0.6" folder. Click OK. Open YouTube. Select a video to download. Download your selected video.

Summarize the following:
Never eat anything that might have raw or undercooked poultry products in it. Do not eat any meat that is still pink, or that is not served hot. Eat only hard-cooked eggs that do not have runny yolks. Never eat or drink something that includes any animal's blood. Avoid eating from street vendors. Keep yourself clean to help avoid catching avian flu. In particular, wash your hands often with soap and warm water. If soap is not available, wash you hands with hand sanitizer that is at least 60% alcohol. Avoid touching your eyes, nose, and/or mouth. Do not spend time around poultry. Do not visit farms, markets, or other places where birds are raised, kept, or sold. Do not touch any birds, dead or alive. If you become ill at any point during your travels, do not hesitate to see a doctor. Similarly, if you become sick shortly after traveling, see your doctor and tell them about your travels. This is especially important if you had any direct contact with birds that may have been infected with avian flu. Avoid contact with other people until you've made sure you do not have avian flu.
summary: Eat carefully. Practice good hygiene. See a doctor if you may be sick.