drupal

In Front End Drupal: Designing, Theming, Scripting, two expert Drupal developers cover everything you need to know to create great visual designs and state-of-the-art interactivity with Drupal’s behaviors, themes, and templates.

If you're utilizing memory intensive modules which requires the php to access more memory than standard installations, change the value in the php.ini file (some hosts require system administrators to make this change).

For your local MAMP setup edit this file:
/Applications/MAMP/conf/php5/php.ini

Look for the following line and change accordingly...

memory_limit = 96M ; Maximum amount of memory a script may consume (8MB)

For Drupal installation you may change...

You may edit the root .htaccess:

Here is an article on adding additional CSS files to your theme. This may come handy if you prefer to have separate CSS files to manage your project more efficiently.

Drupla.org: How to Call Additional CSS Files

Or you could use @import "rule" within your CSS file to access the secondary CSS file.

w3.org: The @import rule

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