This video covers all the basic terminology which a Drupal users should know. I installed Drupal 7.15  online using bluehost  web hosting services and then explained all the options which an Administrator will see after logging in.
Here is our previous video on youtube:

• Drupal Basics for beginners
• Drupal 7 Installation in detail
• How to make clearnurl working in Drupal

Topics which I tried to explain are:

Content

• Content
  • List content
  • Add Content
  • Update Content with various options like Edit/Delete Content
  • Filter Content
• Books
• Comments
  • Approved Comments
  • Unapproved Comments

Structure (Block)

• Adding Block
• Edition/Deleting Block
• Block placement

Appearance

• Themes
  • Selection
  • Settings
  • Installing new Themes

People

• User filters
• User lists
• User Oprations
• Adding a user

Module

• Module
• Lists
  • Core modules
  • Non-core modules
  • Install Modules
• Updates
• Uninstall

Configuration

• People
  • Account Settings
  • IP Address Blocking
• System
  • Site Information
  • Stats
  • Action
  • Variables
  • Crons
• Content Authoring
  • Text Format
    • Filtered HTML
    • Full HTML
    • Plain Text
• User Interface
  • Shortcuts
• Media
  • File System
  • Image Toolkit
  • Image Styles
• Search and Metadata
  • Search settings
  • Clean Urls
  • Url aliases
• Development
  • Performance
  • Logging and Errors
  • Maintenance Mode
• Regional and Language
  • Date and Times
  • Language settings
• Web Services
  • RSS
• Work Flow
  • Rules

Reports

• Status reports
• Recent hits
• Log messages
• Available updates

Here is the youtube video: