25. Use the 'watchdog' function watchdog( 'Apache Solr', 'Adding @count documents.', array('@count' => count($documents)) );
26.
27.
28. Need to run quick PHP snippet? Such things are nice: http://ideone.com (no Drupal there) However this is better: http://example.local/devel/php (by devel module, with Drupal stuff)
43. use Masquerade module Often you'll need to see the site by different groups of users – administrators, anonymous users, registered users, etc . Several browsers is more preferable – this have other usage as well.