What kind of Applique do you want to do? Here is a link to a style of machine applique I like to use:
http://www.quiltingboard.com/t-105264-1.htm
This link is for needleturn - done by Lacelady (Lesley):
http://www.quiltingboard.com/t-95413-82.htm
Also, Sharon Shamber had a bunch of YouTube videos on needleturn that are good - she just won another award for her quilt "Mystique." It's stunning, to say the least.
Good luck. If you are interested, there is a group of us who are all making an applique quilt called "Affairs of the Heart." Here is the link to the main thread:
http://www.quiltingboard.com/t-95413-1.htm