Once you have opened your Google account, you can use it for sending mail, creating schedules, watch videos and blog. There is also the option of opening multiple Google accounts which would mean better online services.
you mean google? you can use your google account for all of its services. the most common ones are youtube,gmail, google search engine, blogger, google maps, image search, news, documents, books, translation and many more. oh! i forgot google plus, which is a social networking site like Facebook