Android lessons for beginners (startandroid.ru)

I've started learning Android on this web-site and now I would like to pay back the author and make some translations. The following lessons are already published:

• Lesson 1. Introduction
• Lesson 2. Installing and configuring development environment Eclipse and SDK Tools
• Lesson 3. Creating AVD. The first application. Android project structure
• Lesson 4. Layout elements and their properties
• Lesson 5. Layout-file for Activity. XML Representation. Changing screen orientation.
• Lesson 6. Layout types. Key differences and properties.
• Lesson 7. Layout parameters for View-elements.
• Lesson 8. Working with layout elements from code.
• Lesson 9. Event listeners with Button example
• Lesson 10. Optimizing event listeners implementation
• Lesson 11. res/values folder. Using application resources
• Lesson 12. Logs and Toast messages.
• Lesson 13. Creating a simple menu
• Lesson 14. Menu, groups, order. MenuInflater and xml-menu
• Lesson 15. Context menu
• Lesson 16. Creating layout programmatically. LayoutParams
• Lesson 17. Creating View-components in a running application
• Lesson 18. Changing layoutParams in a running application
• Lesson 19. Creating a simple calculator
• Lesson 20. Animation
• Lesson 21. Creating and starting an Activity
• Lesson 22. Intent, Intent Filter, Context - theory
• Lesson 23. Activity Lifecycle. Activity states
• Lesson 24. Activity Lifecycle, example about changing states with two Activities
• Lesson 25. Task. What is it and how it is formed.
• Lesson 26. Intent Filter - practice
• Lesson 27. Reading action from Intent
• Lesson 28. Extras - passing data using Intent
• Lesson 29. Invoking Activity and getting a result. startActivityForResult method.

So Android beginners, welcome! And let's study together!

You can find the complete list of lessons published here.