The document discusses various communication tools used on the internet including email, chat, logging in/signing up. It provides definitions and explanations of key terms: - Email allows sending messages to multiple people and attaching files. It can reach recipients quickly but may be delayed. Authentication is through username and password. - Chat refers to real-time text-based communication through software like Google Talk or Yahoo Messenger. It requires an account and both parties to be online simultaneously. - Terms like log on, log in, and sign up are defined in relation to accessing websites and accounts. - Educational uses of these tools include communication between administrators, teachers, parents and students.