What I know about Chapter 2.
The internet was called the ARPANET and was started in September 1969.
Email is short for electronic mail.
Apps can be downloaded from a mobile device's app store or from the internet.
A website consists webpages.
You can send attachments like other documents, video clips, audio clips, and pictures or graphics in an email.
In order to have an email account, you must first set up a username and password to help identify you and tell who you are when you send an email.