This is a really cool read on some advanced editing techniques that they use in film and set extensions,
Its a really fun if you are interested in that kind of stuff! (used in Lord of the Rings and many of our modern films and this is a video of it breaking it down http://www.youtube.com/watch?v=wguOk1HnTbA)
Tutorials
http://www.3dtotal.com/index_tutorial_detailed.php?roPos=1&catDisplay=8&id=1084
http://www.3dtotal.com/index_tutorial_detailed.php?roPos=1&catDisplay=8&id=474
http://www.3dtotal.com/index_tutorial_detailed.php?roPos=1&catDisplay=8&id=767
