At this time, Yahoo! is world’s no. 1 web portal which provide services like mail, chatting, groups, finance, answers services and movies, music, news updates.
You can see most of services without any account at Yahoo! but you will need Yahoo! account for chatting, mail etc. You can use same Yahoo! account at all Yahoo!’s services.
It is very simple to create Yahoo! account. Just go to www.yahoo.com and find sign up link, this time it is located at top right, but they can move it to different place any time. Now you will be shown a form with blank field, just fill up your information and your account is ready to go. You can use it to access all yahoo services.