Once you have a YouTube account and you have signed in you can subscribe to you favorite channels.  Let’s say you come across a great Photoshop tutorial by ajwood2001 and you wood like to see what other videos he has. Click on the user name ajwood2001 and it will take you to his channel. Let’s say you really like the tutorials on Mr. Wood channel and you would like to keep up up with his new videos. Just click the “Subscribe” button at the top of his channel page.