To compose a message in Gmail, click on the Compose button in the upper left-hand corner.
Clicking on the button will create a small window within the browser to craft your message.
Simply fill in the To, Subject and the Body fields then click Send to send the message. If you wish to send the message to more people, put their email address in the CC (carbon copy) field. You will need to click the CC link to create the field. If you wish to send a copy to more people in a more secure way, click the BCC (blind carbon copy) link to create the BCC field.
Your message will auto-save periodically into the Drafts folder. If you wish to leave the message without saving, click on Discard.
For additional information that is not covered by the CSU Fresno Help Center, please consult the official Google documentation here.