How do I share videos on a samsung galaxy 4 tablet?

https://www.samsung.com/us/support/mobile/tablets


Tablets Official Samsung Support

Hi go to you tube in search bar type Samsung galaxy the model number bypass google account will show a few video watch before you try them on your tab it easy

To delete a single image, summon the image on the screen and touch the Trash icon that appears in the upper-right corner. Choose the Confirm Delete command. The image is gone.
Deleting a video isn't as easy as removing an image: You have to long-press the video thumbnail in an album. The long-press activates multiple-selection mode. For removing a video, however, just touch the Trash icon that appears in the upper-right corner of the screen. Choose the Confirm Delete command, and the video is gone.
You can't undelete an image or a video you've deleted. There's no way to recover such an image using available tools on the Galaxy Tab.
You can apply the Delete command to an entire swath of items in the gallery at once. To do so, you must know the secret, found below:

1. Open the album (pile) you want to mess with.
2. Long-press an image to select it. Instantly, you activate image-selection mode.
   

1. Continue touching images and videos to select them.Or you can choose the Select All command.
2. Perform an action on the group of images or videos.

To deselect items, touch them again. To deselect everything, touch the Done command.
The type of commands you can use on a group of items in an album depends on the group. Some commands, such as Delete and Share, can be performed on any old group. Other commands, such as the image rotation commands, work only with pictures, not with videos.

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Hello,

You can acess Android's devices using your email.
Miss more than 5 times the password and after that you should receive a warning about that error and a way to access tablet using your email. Just follow instructions.

Check here:
http://www.pcadvisor.co.uk/how-to/google-android/3424220/how-unlock-android-phone-tablet/

If this answer was helpful please rate it. Thanks

The Galaxy Tab comes with Android version 2.2 (Froyo), this version of the Android OS comes with the ability to work as a WiFi hotspot for up to 5 devices built in. This lets you share your Tab's 3G connection out to other devices over Wifi.
Or you can download SAMSUNG Kies and use Tablet as modem. There is no official SAMSUNG Kies for USA yet but you can get European version from Samsung website