Documentation for symfony 1.x

Practical symfony
Learn symfony: 24 tutorials of 1 hour each, that's all it takes to build up a complete and effective application from scratch. Definitely the best way to become a good symfony developer!
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A gentle Introduction to symfony

The symfony Reference Book
The reference guide: The Symfony Reference Guide is a book where you can easily find answers to your questions at your fingertips. This is a book you will keep with you whenever you develop with symfony.
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More with symfony
Do more with symfony: This book is the symfony 2009 advent calendar, a set of 24 tutorials about advanced symfony topics, published day-by-day between December 1st and Christmas 2009. All tutorials are available in five languages: English, French, Spanish, Italian, and Japanese.
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