Can I get an HBO Now account without an iOS, Android or Roku device?
There is no way to sign up for an HBO Now account online unless you sign up through an internet or mobile provider. You can see a list of providers here. This page also provides links and instructions on how to sign up for an account through each individual provider.
The easiest way to sign up for an HBO Now account is through one of the official HBO apps on your iOS or Android device, or via a digital streaming service, such as Apple TV or Roku.