From Wiki
Jaspersoft tutorials
Video tutorials (iReport 3.5.x)
Community provided tutorials
If you want to see your tutorials published here, send an email to giulio at jaspersoft dot com
Tutorials in Spanish provided by Alfonso Blanco Criado about iReport 3.0 (old version)
Tutorial in Brazilian Portuguese provided by Flávio Araújo about iReports 3.5.0 and NetBeans 6.5