I'm still studying for the SSL certification myself, but these are the resources that I've found so far.
The general introduction to the concepts and configuration from Syngress press is "Secure Access SSL VPN Configuration Guide". This is a great organized walk through of what is needed to use the SA.
Next stop is the tech support landing page for the mid-range SA-4000 series. This organizes access to the getting started guide, manual, tech notes and all the related material for the series.
I also picked up the "Configuring Juniper Networks Secure Access" Course ware from the fulfillment site. This is the book and labs from the two day introduction class for self study. I'm working my way through this in the evenings a couple hours at a time.
I am also studying for JNCIA-SSL.
I downloaded the DTE (Demonstration and Training Edition - http://www.juniper.net/support/products/sa/dteva/) and created a VM to study at my home. It's great!!!