URL to study basics Oralce 10g

hi friends,
i'm a beginner to oracle.
plz give some url, suggestion, articles and so on.. to study basics of oracle 10g.
can i directly start study from 10g or will i start from anyother previous version of oracle.
thanks in advance.
Bye
Ramachandran M

Here the Oracle 10g R2 documentation: http://www.oracle.com/pls/db102/portal.portal_db?selected=3
Aron

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