how create a theme for beginning

Man, you really should Google to do your hometask on theme internals.

But basically, different css files can be used to be applied for different media, like print and handheld.

Regions are cool. These are areas that you declare in info file and then put in your theme. Say, you assign a region in info file:

regions[abovecontents] = Above contents

And then you place it in your page.tpl.php file:

<?php echo $abovecontents ?>

And then you can assign blocks to it to, say, display menus, ads, etc.

- Alexei Rayu.

Drupal Related Services | Sitehound Drupal

How you go about creating a theme really depends on what level of control you need over the layout and contents...

Your post is entitled 'how create theme for beginning'. If you meant 'how do I, as a beginner, make my own theme' then, assuming your needs are modest, CSS may be all you need. CSS lets you customise the look of existing themes but not to modify them in any depth. If all you want is to change to fonts and colours and proportions of the areas and boxes on screen that will be fine, you are on the right track :)

If however you meant 'How do I create themes from the ground up' CSS will not be enough for you and you will need to use both HTML, CSS and quite likely some PHP. If this is the case you ought to search the drupal site for PHPTemplate and make sure you are familiar with basic HTML and PHP, in particular how Arrays work. The simple case is quite easy... copy an existing theme from the themes folder into the sites/all/themes folder and modify it's folder name, it's .info file and the .tpl.php files that define the templates for each core component of Drupal: nodes, pages etc.

Good luck,

Roger.