3)  Tipton & KRause 3rd Edition : http://secinf.net/info/misc/handbook/ewtoc.html
A major source of test questions in the past, still very useful stuff, and it's FREE.

4)  HIGHLY Recommended:
Signup for the CISSPStudy_1 list, run by Ginger Doetsch : http://groups.yahoo.com/group/CISSPStudy_1
Signup for the CISSPStudy e-mail list : http://infosec.gungadin.com/index2.shtml

5)  Why be a CISSP? : http://www.infosecuritymag.com/oct99/profcert.htm

Additional CISSP resources, loosely grouped

CISSP Prep Course materials :  http://www.consec.org
CISSP Practice Exam : http://www.cissps.com/Cissp_Exam/Practice/practice.html
CISSP Forums :  http://forum.cissps.com/ubbcgi/Ultimate.cgi?action=intro

The InfoSec Management 2000Handbook:
http://www.itknowledge.com/reference/standard/0849399742/ewtoc.html
 (you only get 1-2 clicks before you have to pay, so choose your chapter carefully!)

For Crypto Newbies :  http://15seconds.com/issue/991216.htm
Crypto Made Easy :  http://www.cissps.com/Cissp_Exam/Practice/crypto.html
Intro to PKI : http://docs.iplanet.com/docs/manuals/security/pkin/index.htm
Intro to SSL : http://docs.iplanet.com/docs/manuals/security/sslin/index.htm
RSA Labs Crypto FAQ :  http://www.rsasecurity.com/rsalabs/faq/index.html
Bruce Schneier's Crypto Hotlinks :  http://www.counterpane.com/hotlist.html
W3.org's Internet Security Resource Page : http://www.w3.org/Security/
TCSec Coverage WITH TESTS! ! : http://www.radium.ncsc.mil/tpep/library/ramp-modules/
  (see especially 5,6,7,8,9,11 which have coverage beyond just TCSec)
 
DoD Rainbow Series : http://www.radium.ncsc.mil/tpep/library/rainbow/
(in theory no longer on the exam, but I've heard rumors in listservs
that TSEC stuff still appears on the test)
Role-Based Access Contro l :  http://hissa.ncsl.nist.gov/rbac/
RSA's Crypto Glossary : http://www.rsasecurity.com/developers/total-solution/glossary.html
RSA's VPN Tutorial :  http://www.rsasecurity.com/products/securid/whitepapers/vpns/index.html
Computer Forensics Overview : http://www.ddj.com/articles/2000/0009/0009f/0009f.htm
Firewalls Complete, online book : http://secinf.net/info/fw/complete/
Trust in Cyberspace, online book : http://www.nap.edu/readingroom/books/trust/
TEMPEST : http://www.eskimo.com/~joelm/tempest.html

Large Archive of Security Articles :  http://www.nwfusion.com/newsletters/sec/
  (Mostly Physical Security, Network Security, and Security and Policy Management  )

HUGE compendium of InfoSec sources : http://www.infosyssec.net/index.html
  (note the left-hand side, which are all the topics covered)

Computer Security Institute's Archive of InfoSec Articles : http://www.gocsi.com/excerpt.htm
ACSA InfoSec Bookshelf :  http://www.acsac.org/secshelf/book001/book001.html
Discussion of Optical Lenses :  http://www.photo.net/photo/optics/lensTutorial.html
US Navy Physical Security Manual :  http://neds.nebt.daps.mil/Directives/5530_14c.pdf
Good source of quizzes : http://www.sans.org/infosecFAQ/index.htm
(remember - GIAC and CISSP have a different focus)