How to Link Your YouTube Channel to Facebook, Twitter, Instagram and More
YouTube and Facebook
Open both your Facebook page and your YouTube channel in separate tabs.
Click on the blue ‘Edit’ link next to the ‘Profile’ option on your YouTube page and then check the checkbox called ‘Website.’
Copy the URL of your Facebook page and paste it into the textbox that appeared when you checked ‘Website.’
Finalize these changes by clicking on ‘Save Changes’; you’ll see this option at the bottom of the ‘Profile’ section of your YouTube channel.
YouTube and Twitter
Follow steps 1-2 from the previous step-by-step instructions, the only difference being that you open your Twitter link.
Select the ‘Select Accounts’ option near the Twitter icon on your YouTube page, input your username and password in the pop-up screen, and click on the ‘Authorize App’ button.
Viola! Your YouTube channel and Twitter account are now connected. Now, enable ‘Sharing Activity’ on your YouTube account and save.
YouTube and Instagram
Open both your YouTube and Instagram profiles, and copy your YouTube channel URL.
On the top right corner of your Instagram profile, click on your username and choose the ‘Edit Profile’ option. Paste the YouTube URL in the ‘Website’ checkbox and click ‘Submit.’