The OpenNMS Group offers formal training courses to help you get up to speed quickly. Courses are taught by the same people who maintain the project. Not only are they experts on OpenNMS, but they have used most of the major proprietary tools as well, and can demonstrate the analogous features in the OpenNMS application.
OpenNMS training is usually provided in English, though classes in Spanish are also available. Classes in German are offered through our partner in Germany, Nethinks.
OpenNMS classes can be held at your location, if you have training facilities. Scheduled classes are held at our office in Apex, North Carolina, USA.