I'd really like to try building a car model but I can find a tutorial that relly helps me with that so I decided to ask here if anyone can tell me where can I find a good tutorial about building a car model (for beginners of course)  
any suggestion will be helpfull

hello,
I have put in our ftp an example of a Citroen Xsara.
It is not a tutorial but it shows you how it is made:
 
ftp://ftp.realviz.com/private/support/xsara.zip
 
regards

<a href="ftp://ftp.realviz.com/private/support/xsara.zip">ftp://ftp.realviz.com/private/support/xsara.zip</a>