Error message

  • Warning: Cannot modify header information - headers already sent by (output started at /home/p/pifago/productolog.com/public_html/index.php:1) in drupal_send_headers() (line 1490 of /home/p/pifago/productolog.com/public_html/includes/bootstrap.inc).
  • Warning: Cannot modify header information - headers already sent by (output started at /home/p/pifago/productolog.com/public_html/index.php:1) in drupal_send_headers() (line 1490 of /home/p/pifago/productolog.com/public_html/includes/bootstrap.inc).
  • Warning: Cannot modify header information - headers already sent by (output started at /home/p/pifago/productolog.com/public_html/index.php:1) in drupal_send_headers() (line 1490 of /home/p/pifago/productolog.com/public_html/includes/bootstrap.inc).
  • Warning: Cannot modify header information - headers already sent by (output started at /home/p/pifago/productolog.com/public_html/index.php:1) in drupal_send_headers() (line 1490 of /home/p/pifago/productolog.com/public_html/includes/bootstrap.inc).
  • Warning: Cannot modify header information - headers already sent by (output started at /home/p/pifago/productolog.com/public_html/index.php:1) in drupal_send_headers() (line 1490 of /home/p/pifago/productolog.com/public_html/includes/bootstrap.inc).
  • Warning: Cannot modify header information - headers already sent by (output started at /home/p/pifago/productolog.com/public_html/index.php:1) in drupal_send_headers() (line 1490 of /home/p/pifago/productolog.com/public_html/includes/bootstrap.inc).

Книги

Об интерфейсе – Алон Купер

Интерфейс: новые направления в проектировании компьютерных систем – Джеф Раскин

Психбольница в руках пациента – Алон Купер

Преодоление пропасти

Стратегия голубого океана

На ключке: как создавать продукты-хиты

Автоматический покупатель

Lean Startup