On a computer
To share a playlist, click the Share button on the Playlist page. From here you can share the video across social networks, embed the video, or email the video.
You can also share a playlist while watching it. Click the share icon under the video. From here you can share the video across social networks, embed the video, or email the video. You also have the option to share the playlist from the current video you’re watching or from the start of the playlist.
If videos aren’t appearing in an embedded playlist, some of the videos in the playlist may have had their embed option disabled by the uploader. Private videos will also not play in the playlist unless they've been shared with you by the uploader. For best results, you may want to ensure that the content you've included in your playlist contains only public videos that have the embed option enabled.
On an iPad
On the playlist screen in the YouTube for iOS app, tap the share icon to share the playlist via email, SMS, or other social networks you have installed on your device.