Free Courses on SharePoint 2007

Here are some free courses on SharePoint 2007. Each course duration is 20-40 min and i find them informative and good for learning basic things in SharePoint:

1. Share Excel data with others by exporting it to a SharePoint site
2. SharePoint document libraries I: Introduction to sharing files
3. SharePoint document libraries II: All about checkout
4. SharePoint document libraries III: Work with version history
5. SharePoint document libraries IV: Tips and tricks
6. SharePoint document libraries V: How to download a library
7. SharePoint slide libraries I: Set up a library for your team
8. SharePoint slide libraries II: Use slides in the library
9. SharePoint calendars I: Make the most of your team calendar
10. SharePoint calendars II: Connect a SharePoint calendar to Outlook
11. SharePoint calendars III: Create your own calendar
12. SharePoint calendars IV: Tips and tricks
13. Workflows I: Basics you should know
14. Workflows II: Collect feedback for a file
15. Workflows III: Collect digital signatures for a file
16. Workflows IV: Include someone outside your company
17. Workflows V: Handy tips for tasks
18. Excel Services I: The basics
19. Excel Services II: Requirements, recommendations, and permissions
20. Excel Services III: Control what people see
21. Excel Services IV: Allow user input