If you are looking to prepare for the CISSP, one of the domains that gives many students trouble is Cryptography. Quite often IT professionals have experience with crypto, but not on the level of detailed required to pass the CISSP. InfoSec Institute trains more IT pros on the CISSP than any other organization, and we have now released a free CISSP training resource specifically on the cryptography domain.
Take a look at the Free CISSP Training course here.
Additionally, we have published a CISSP Study Guide, at 45 pages, it lets you know what you need to study, and what not to.
Lastly, if you are ready for formal CISSP training, we offer the often awarded InfoSec Institute CISSP Boot Camp in many locations in the US and Live Online.