The QGIS project offers a collection of documentation and training materials accumulated over the last years. Current material includes:

• User Manual
• How-To collection on QGIS wiki 

The documentation process is managed by the QGIS community-team with the help of many contributing volunteers.
We would like to encourage you to help us with the update of the QGIS documentation material and join the community-team. Any kind of help is welcome (reading, writing, translating, etc). Main tasks are:

• updating and translating the QGIS manual
• writing workshop materials and translating the existing workbook
• updating and translating the QGIS brochure
• proof-reading and testing existing material

Anyone interested in helping us should subscribe to the QGIS community-team mailing list.