update

Author: zardus

welcome/DESCRIPTION.md

@@ -1,12 +1,14 @@
 This module contains challenges that will teach you to interact with the platform!
 
-You can interact with challenges in three ways:
-- You can use the Dojo Workspace, a version of Visual Studio Code running inside the dojo.
-- You can use the Dojo Desktop, a full Linux GUI desktop running inside the dojo.
+You can interact with challenges in four ways:
+
+- You can use the Terminal, a simple commandline interface running right in your web browser.
+- You can use the Visual Studio Code, a full-featured Integrated Development Environment right in your browser.
+- You can use a full Linux GUI desktop, again, running right in your browser
 - You can set up your ssh client and ssh in.
 
-We'll run you through the first two in this module, and show off some other features of the platform!
+We'll run you through the first three in this module, and show off some other features of the platform!
 
 Below, you will see a list of learning resources ("Lectures and Reading") and a set of practice problems ("Challenges").
 Each entry in the list is expandable: click/tap on it to expand the content.
-You can go ahead and watch the Getting Started video below, or dive straight into the Using the VSCode Workspace challenge!
+You can go ahead and watch the Getting Started video below, or dive straight into the `Using the Terminal` challenge!