Redhat resources

Hey there i'm interested in finding some decent Redhat books / resources for the purpose of learning more about the Operating system, I don't have the intention of getting cerfitied but am just really interested in Linux and Red Hat in general.
I will be using Centos
this book looks good has anyone used it?
Red Hat Certified Technician & Engineer (RHCT and RHCE) Training Guide and Administrator's Reference, RHEL 5 eBook: Asghar Ghori: Amazon.co.uk: Kindle Store
Thoughts on Jangs book is it any good?
Thanks
I will be using Centos
this book looks good has anyone used it?
Red Hat Certified Technician & Engineer (RHCT and RHCE) Training Guide and Administrator's Reference, RHEL 5 eBook: Asghar Ghori: Amazon.co.uk: Kindle Store
Thoughts on Jangs book is it any good?
Thanks

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Comments
I've read this one twice.
Amazon.com: RHCSA/RHCE Red Hat Linux Certification Study Guide (Exams EX200 & EX300), 6th Edition (Certification Press) (9780071765657): Michael Jang: Books
I ordered this one yesterday. It is written by a member of techexams.
Amazon.com: Hands-on Guide to the Red Hat Exams: RHCSA and RHCE Cert Guide and Lab Manual (Certification Guide) (9780321767950): Damian Tommasino: Books
I have mixed reviews about this one. It's a good book, but I use it as more of a reference.
Amazon.com: Practical Guide to Fedora and Red Hat Enterprise Linux, A (6th Edition) (9780132757270): Mark G. Sobell: Books
I'm looking at this one but on the fence if I am going to buy it. Price plus no reviews make it a hard sell. Need to find out if anybody here has used it.
http://www.amazon.com/Strategies-Platforms-Applications-Information-Assurance/dp/076379189X/ref=sr_1_1?s=books&ie=UTF8&qid=1340375791&sr=1-1&keywords=security+strategies+in+linux+platforms+and+applications
VMware Certified Advanced Professional 5 – Data Center Administration (VCAP5-DCA) (Passed)
VMware Certified Advanced Professional 5 – Data Center Design (VCAP5-DCD)
Just about all the books I buy are training materials and subsequently a write off for my business. If only I could find a way to justify books like the Game of Thrones series as training.
VMware Certified Advanced Professional 5 – Data Center Administration (VCAP5-DCA) (Passed)
VMware Certified Advanced Professional 5 – Data Center Design (VCAP5-DCD)
Next up: eventually the RHCE and to start blogging again.
Control Protocol; my blog of exam notes and IT randomness