Yes, it is possible.
Gmail Yahoo and Hotmail are mail servers. They can be used to send and receive mails. Outlook uses these mail servers to sync at one place.
Yahoo! Mail has a better look and some better features than the regular Yahoo! classic e-mail.
Yes you need an email ID for that too. However Gmail is not necessary to receive mails. You can get mails to Yahoo mail or hotmail too.
You can switch from Yahoo account to Gmail account easily. The account can be created on Gmail account. You can export all the data from yahoo account as well.
Yahoo Mail is just one of several ways to receive email. Others would be GMail, Outlook.com mail, many ISPs, and other providers as well.
Gmail is said to be better than hotmail. However it is on one's perception how they find it. Gmail is said to be lighter and faster.
Google mail is better! (definitely!)
One Direction is a famous music band. They will have a gmail or yahoo account but they have not shared it. It can be due to privacy reasons.
There are a few sites that are close to how Yahoo used to be. One site is Mail. com. This site even offers upgrades if you choose them. Another site is Gmail, but it doesn't have the same homepage as Yahoo.
There are many services available that provide free e-mail accounts to their customers. Some of these services are Gmail, Hotmail, Outlook, Yahoo Mail, and AOL Mail.
Gmail.com makes it difficult to see your new mail and does not have spam filters like AOL has, but gmail.com and AOL both have the same IM problems. One problem is that you can only IM someone with that address (AOL, Gmail) but AOL also separates new, old, and sent!!!