[support] Help with category and taxonomy

[Reynier Perez Mira]

Hi list:
Because I'm newbie with Drupal I really can't understand how category system works. In CMS like *Nuke, Joomla and others I simply do this:
 - Add category
- Add news to the category
But here in Drupal I see some new terms for me like Taxonomy and some others. Where I can found a tutorial or better a explanation for how this part of Drupal works?
Cheers and thanks in advance 
--
ReynierPM
5to Ing. Informática
Maestro de poco, aprendiz de mucho