Here is a course with videos that present Hierarchical clustering and its complementary with principal component methods. Four videos present a course on clustering, how to determine the number of clusters, how to describe the clusters and how to perform the clustering when there are lots of individuals and/or lots of variables. Then you will find videos presenting the way to implement hierarchical clustering in FactoMineR.
- Tutorial in R
For more information, you can see the book blow. Here are some reviews on the book and a link to order the book.