Here are several videos that can help you:
Admin Area of Your Site
- Using the Image Editor to Rotate and Flip
- Using the Image Editor to Crop and Scale
- Trashing a Page or Post
- The Toolbar
- Tags
- Restoring a Post
- Restoring a Page
- Replacing an Image
- QuickPress
- Paste From Word
- Embedding
- Media Library
- Lists
- Link Category
- Image Editor
- Hyperlinks
- Featured Image
- Excerpts
- Edit Links
- Editing Posts or Pages
- Edit an Image
- Delete an Image
- Dashboard
- Change a Password
- Categories
- Approving and Editing Comments
- Admin Bar
- Add Paragraph
- Add New Post
- Add New Page
- Add Media
- Add Links
- Add an Image from URL
- Add Heading
- Add an Image from Your Computer
- Add an Image from Media Library
- Widgets
- Users
- Spam Control
- Menus
- Images
- Gravatars
- Customize the Dashboard
- Create Pages
- Akismet Spam Protection