Calleon -
Use the DVD for the Caribbean fishes if it's convenient for you and you plan to continue diving in those waters. It has search capabilities, sketches with ID keys in addition to photos + more photos than the books. (Though Pufferfish's recently posted juvenile Whitespotted Soapfish at Name that Critter doesn't appear in either.)
Many of the book photos are included as the DVD publisher, Reefnet, has a partnership with the book publisher. Only digital photos were used for the DVD's, so some of the old film photos that haven't been digitized are only found in the books -- not an issue.
For non-fish critters and corals, books are the best way to go for now.
And don't forget to show your pictures to local dive ops -- they're usually quite knowledgeable about what's in their waters.
Uno mas...If it's available to you at any point along the way, take a REEF Fish ID course.
Enjoy!
-Deb