Hotmail - www.Hotmail.com
Hotmail was one of the first webmail services on the Internet. It was launched on July 4, 1996. In 1997, Microsoft acquired Hotmail for about $400 million. Hotmail was then rebranded to MSN Hotmail then Windows Live Hotmail. It was replaced by Microsoft's Outlook.com in 2013. If you visit www.hotmail.com, you will be redirected to the main sign-in page for all Microsoft accounts. To get started with a Hotmail email, you will need to create a Microsoft Account. A Microsoft Account gives you access to Microsoft products such as Hotmail/Outlook, OneDrive, Skype, Office, MSN, Store, Xbox Live, etc.
Transition to Outlook.com
Outlook.com was first introduced in 2012 with a beta version. Existing Hotmail customers could freely upgrade to the preview version of Outlook.com and downgrade back. Outlook.com graduated preview stage on 18 February 2013. The upgrade was deployed on April 3, 2013. The users kept their existing Hotmail accounts and received the option of having an @outlook.com email address. By May 2013, Outlook.com had about 400 million active users.
Hotmail Sign Up
Step 1: Go to www.hotmail.com.
Step 2: Click Create account.
Step 3: Type your username.
Step 4: Choose your preferred mail ending (either @hotmail.com or @outlook.com) by clicking on the small down arrow on the right of the username box and click Next.
Step 5: Type your password and click Next.
Step 6: Fill out your information including your country, your birthdate and click Next.
Step 7: Type your phone number and click Send code.
Step 8: Check your mobile phone for an activation key and type it in the respective box. Click Next.
You can read this article for a more comprehensive guide on how to register a Hotmail account: Hotmail Sign Up.
Step 1: Go to https://login.live.com.
Step 2: Enter your email address or your phone number and click Next.
Step 3: Enter your password and click Sign in.
If you don't know how to log into your Hotmail account on Android and iOS, you can read this article: Hotmail Sign In.