Comprehensive manuals are provided for the AviatorCalc and Pilot Calculator flight planning software. Download the manual for the product that you are going to use on your mobile phone. The manuals also include instructions for the free Cross Wind Demonstration program. You will need Adobe Acrobat reader. Download the correct user guide for the product that you will be using.
 

If you don't have Acrobat Reader this can be downloaded from http://www.adobe.com/ and installed on your computer. Click on the "Get Adobe Reader" logo on the left. Follow the instructions to install it on your personal computer.