Backtrack 5, Is It Special?

My website was recently hit twice by an attack that left it with phishy links and made me miserable. It has cost me alot in terms of my search engine reputation (at least I think this way) as my website has been dropped by many positions and despite trying hard, I have been unable to reach those previous positions. For all those, who are not familiar with the power of a few position changes, I must tell that dropping by 6 positions for just one good keyword dropped the earnings of my website by about 20%. Evaluate it for a dozen other good words and you can imagine how much I have lost.So I decided to know more about how websites are attacked and how to protect againts them. I did quite a lot of research on this topic and found many good books on the subject. I am not a big fan of books as they seem boring to me. I like video tutorials more as they are more interactive and you can gain more from them with comparatively lesser concentration. I was unable to find good vidoe tutorials on the subject but I will keep looking and I hope I find some material.One important thing that came into my knowledge was that there is a special linux distribution, made specifically for this purpose. I mean for the purpose of testing vulnerabilites. It is called Backtrack and the newest version is 5. I downloaded it and deployed it on a vitual machine to see how it looks. I was really impressed by the looks of the OS but it is not what I want to do with it. I want to learn how to properly use it to find vulnerabilities so that I can protect my website from future attackes. I tried to look for some helping material but all I was able to find was a book for the version 4 of the operating system. I don't want to invest in an out-dated helping material. So I thought why not seek help at the forum I use the most, and here I am. I would really like to here on this subject from you folks. I am specifically asking about:1) Basic Use of Backtrack 52) Any helping material for this specific OS.3) Good vidoe tutorials on the subject of finding vulnerabilities and fixing them.

you should learn from bt website, it have a online training