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Use this form, if you would like to contact our company, our Webmaster or team.

Please note: Occasionally, we may not be immediately available by telephone due to our current customer project workload.  Therefore, we recommend that you use this form for contacting us.

If you have technical questions and a small budget (starting from 40 Euro) for a professional and timely answer, please use our professional support. If you would like free technical assistance by our community, please use our forums.

If you want to report an error in one of our books, use please the appropriate form in the readers' portal. If you have a question about this website (e.g. registration, newsletter), please read the Website FAQ first (German only).

For training inquiries, please use our Training Request Form.

Please note: Currently, this website is predominately in the German language. If you have any questions , please do not hesitate to ask.


Please use "Very urgent" only a really urgent cases. "Very urgent" message are restricted to a maximum of 500 characters.

Other ways of contacting us

Telefon/Telephone: +49 201/649590-0 (Monday to Friday, 9 a.m. - 5 p.m.)
Telefax: +49 201/649590-99