Question

What is the best way to load a js and css file on certain pages (not on every single page like happens when using the .info file)?

Answer 1

If the pages contain a form, you can use something similar to the following code:

$form['#attached']['css'] = array(
  drupal_get_path('module', 'ajax_example') . '/ajax_example.css',
);

$form['#attached']['js'] = array(
  drupal_get_path('module', 'ajax_example') . '/ajax_example.js',
);