Secure Coding for Newbies?

[Joe User <joeuser () blazemail com>]

Hi, 

I'm a beginner in PHP and Perl coding and would like a little help!  I've written a few small scripts for personal use, 
but I want to start writing scripts that will be used by / open to the public, and want to write them with security in 
the forefront. 

I'm having a hard time finding specific, concrete examples of common webapp security problems and examples of how to 
avoid them.  Many sites say "validate user input" or "avoid path traversal" or "beware of include files" but don't give 
good examples of *how* I'm supposed to do these things! 

I guess I'm looking for something along the lines of "Webapp Security for Dummies" as a building block.  Can anybody 
point to useful resources for this?  The OWASP guide seems to be more of a guide for competent coders who already know 
how to avoid the problems listed.  :)  

Thanks!

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