Check out this website for more tutorials.
This first video is a demonstration of how to use your tongue and facial muscles to make the R sound properly. He also helps you to avoid some pronunciation gaffes!
Blog owner, Jennifer Kumar is a communication skills trainer helping Indians communicate better with American clients. Contact her for more information.
Pronunciation Exercises - Descriptions, Photos, Videos with Sound and Demos:
The AW Sound in American English
B and P
J and Z
V and W
Words ending in TION
Networked blogs link: http://networkedblogs.com/OaB3D