These free booklets from Symbian are intended for developers. They discuss various development topics in hand and consie format. They are normally less than 100 pages long. The terms "free" here mean you can download it from Symbian web site and get the printed book for free.

Currently there are 9 booklets plus some translations to Chinese and Japanese and the list is growing. Here is the current list:

Essential Symbian OS booklets

• Signing Tips
• Coding Tips (also available in Chinese, Japanese and Korean)
• Performance Tips (also available in Chinese and Japanese)

Using Symbian OS booklets

• Getting Started (also available in Chinese)
  
• Java ME on Symbian OS
• P.I.P.S
• Carbide.c++
• Data Sharing Tips

Essential UIQ booklets

• UIQ Essentials Getting Started (also available in Chinese)