I really like these videos by Dr. Jack Newman. Dr. Newman is a medical doctor who devotes his sole practice to breastfeeding moms. If you are starting to breastfeed, getting the latch right is crucial. My friend had her 7th baby recently. He was born prematurely so she had him in the hospital and was able to see a lactation consultant. She found out that the pain she thought was normal for breastfeeding with her previous babies, through all these years, is not normal. She had an incorrect latch!
A page with step by step latch instructions is found here http://www.llli.org/faq/positioning.html and here http://normalfed.com/Starting/latchtalk.html
This first video shows how to latch a baby on properly, with an asymmetric latch.
Here’s another one that shows the mother compressing the breast, a trick used to help more milk come out and keep the baby interested:
You can see more of these videos by Dr. Newman here at http://www.breastfeedinginc.ca/content.php?pagename=videos