You sign in to YouTube with your Google Account. To sign in to YouTube, enter your Google Account email and password. After signing up for YouTube, signing in to your Google account on another Google service will automatically sign you in to YouTube.

YouTube is a free video sharing website that makes it easy to watch online videos. You can even create and upload your own videos to share with others. Originally created in 2005, YouTube is now one of the most popular sites on the Web, with visitors watching around 6 billion hours of video every month.

"Me at the zoo" is a YouTube video uploaded on April 23, 2005. It is the first video to be uploaded to the platform. The 19-second video features YouTube's co-founder Jawed Karim, who was 25 years old at the time, in front of two elephants at the San Diego Zoo in California, noting their long trunks.

Try updating your browser or clear your browser's cache & cookies. You can also check whether your browser extensions that block ads are affecting video playback. As another option, try opening YouTube in an incognito window with all extensions disabled and check if the issue continues.