[trycatch]

> Also, changing windows (e.g., if you have two or three document processing files open), how do you quickly and efficiently switch to the right one? I don't know!

There are quite a few of them:

1. Mouse scroll on the icon in the dock.

2. Click twice on the icon in the dock and select the window from spread/expose.

3. Right click and select the windows from the list.

4. Alt+Tab. Select the application, wait a second, select the window.

5. Alt+Tab. Right-click on application, select the window.

6. etc.