This is a screencast that shows users of the Macintosh how to enable and use international keyboards, using Lithuanian as an example of an international language. However, I also aim to show the value of the US Extended keyboard layout to any Latin-based writing system, making the tips here useful for most languages of Europe and many of Africa.
Since this is my first screencast, it has a lot of rookie mistakes in production, but I hope the information remains useful. I'll try to make a Windows version soon!