Silver Needle gave you a great link, I too am a Erin Russek fan. So heres a couple more sites for different applique techniques.
http://www.generations-quilt-pattern...-applique.html This one is for invisible machine applique. And this one is for fusible machine applique
http://ivoryspring.wordpress.com/201...ible-applique/ If you scroll down on the righthand side you'll find she has several other tutes.