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Well we don't have just 1 tutorial that will explain to you everything about internet security. i would recomment browsing through some of the tutorials in this web site. I would recommend the folowing books on TCP/IP in general.
Also i would recommend just staying up to date with this website. Everytime i visit this site i learn 1 or 2 more things. If you post some of your knowledage then you sure to recive some from another member. this site is a very good resource from also anything you can think of that has to do with the internet and computers in general.
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Hey quod................here is some serious old fart advice.
Search the net (google) for CIAC and CERT......have a look...maybe subscribe? (free)
Also look at the major AV sites like Semantec, Kaspersky, NAI, Panda and so on. Bookmark them and subscribe to their security bulletins (free)
Books are fine for general principles, but are at least 3 months out of date before they are published...this is a "now" subject?
Start slow,
Stay well
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