This document provides information about various technology tools used for communication in education, including email, chat, and online forums. It describes how email works using SMTP and consists of headers and message bodies. It outlines how to create an email account and send messages. Chat is described as enabling real-time text transmission similar to conversation. Online forums allow people to hold discussions through message boards organized in a tree structure under categories and threads. Advantages and disadvantages of each tool are also summarized.