How do I create and use a SEN account for Sony Internet services on my Android TV?

A SEN account cannot be created using the TV; you must use a computer or smartphone to visit https://account.sonyentertainmentnetwork.com and follow the on-screen instructions to create one. To sign in, select the Sony Internet service icon on the Home Menu and follow the on-screen instructions on the sign-in screen. Note that these services were scheduled to become available after a software update in spring 2015. (Page 2)