Login into YouTube, Inside of YouTube, simply hit the new "Switch Accounts" link, and then click to show "All My Channels". On the page that comes up, there will be a "Create New Channel" button.
Clicking this button will create a new channel, and create corresponding Google Plus page.
Now, inside YouTube, you can hit the 'Switch Accounts' link to jump back and forth between your channels!
Below video illustrate the steps to create multiple youtube channel in single email account
