VCP4 studying resources

I know, there are a lot of resources and a lot of material on the web.

Here just a couple of post (that link to other resources) that I find useful:

http://www.simonlong.co.uk/blog/vcp-vsphere-4-practice-exam/

http://www.simonlong.co.uk/blog/vcp-vsphere-upgrade-study-notes/

http://thesaffageek.wordpress.com/2009/12/02/vcp4-learning-resources/

I really appreciate the Simon Longs practice tests and study notes. Thanks Simon for sharing!