Cisco WebEx is an audio and video conferencing solution designed for small group collaborations and meetings, or large scale web-based public events. WebEx includes features such as sharing presentations and applications, text chat, two way audio/video, Q&A, and polling.
The following video recording Online Live classroom using WebEx Training room Basics will teach you how to use it for remote teaching.
You can find everything related to how to use webex in the following webiste: Webex Meeting interface and features explained and here: Webex Knowledge base