For performing Yahoo SignUp one has to provide the email address and
password and user name on the SignUp page. While performing the Yahoo SignUp do check whether
you are in the internet connection zone or not. After entering all the SignUp
details in the Hotmail login page just click on the signUp tab. For any
guidance just call at 00000 at any time.
https://www.monktech.us/blog/how-to-perform-yahoo-sign-up/