To be a pen tester, shall i go for SANS 504 or 560 training and othre than that what is the best book you cab advice me to read before and after the training ??

Funny... I just asked 'kind of' similar in response to his other post. 

Please do your best, 'it experts' to find a specific forum section, relative to your needs, and post once, only.  It saves repetition...  additionally, those of us who are regulars on here see posts in ALL forums, anyway, so I can assure you, we'll see it, whichever forum you post it in, and if it's NOT in a proper section, don or the moderators can move it...

No worries, on the duplicate posts... was more or less just noting it, as a common courtesy!   

As for your knowledge range, you've got quite the resume there.  With the knowledge you have, my personal experience says you could go ahead and go with the 560.  I know you said you had little OS or programming experience, but if you truly have achieved CCIE Security and some of the others you've listed, I think you'll be OK, and you can come up to speed, quickly enough, to go at 560. 

Are you looking at vLive, or classroom?  Obviously, the face-to-face experience, especially if you get Ed Skoudis teaching you, would be 'best possible scenario.'  (Not that other instructors or methods wouldn't suffice, as well, just that, coming in, cold, sometimes, having the instructor at your fingertips can be of benefit.) 

Pentesting, full-time, you'll eventually want to delve more into programming and such, as well as learning more of web application and programming languages, but I think the concepts and knowledge you'll need will continue to build, with experience and further education / learning, as you grow with it. 

Now, to be fair, I WILL say, I think you'd have an easier go at either of the SANS courses, if you first had Security+ and / or CEH, and had more fundamental base knowledge specific to this field.  However, again, if you're capable enough to hold the certs you list, I think you'll be alright.

My opinions, anyway...   

LOL...  Good morning, dynamik! 

Thanks all for the reply.

Actually, the 504 course will be run by: Ed Skoudis, and the course 560 by someone else and I am planning to go for SANS in Singapor , I am thinking to take the basic with Ed in 504 and I can continue self study and practice, and since he is the author of 560, defiantly I will get benefit and he will guide me to the right direction. The 560 course will be in London by some one else (that’s why I do not want to take it). Any way my concerns is if I take the 504 course with Ed, can I start doing pen-test for network or I need to attend 560???

Also can you help me in the following?
1. What is the best list of books to start and become expert in pen testing?
2. Any video or other resources  I need?
3. What is the offsec course.

Thanks again for your support and guide.

I am currently reading Counter Hack Reloaded, and am finding that it's basically the Sans 560.

dynamik gives good advice.  If you're looking to do more of the pentesting, then 560 is definitely more along that line, based on what I've heard and read.  (Again, I haven't taken either, yet, so...)