To easily use the download offer of our Coaching Zone Portal, the following information may be helpful for you.


File formats of download articles

We offer downloadable articles in the following file formats: classic PDF format (exercises), interactive PDF files (eBooks), as well as videos in MPEG4 format.

Opening pdf files

 The Acrobat Reader from Adobe, which you can download and install for free at https://get.adobe.com/reader/, is the best choice for opening our downloadable articles in PDF format. Our interactive eBooks in PDF format also require Adobe Flash Player for video playback, also available for free at https://get.adobe.com/flashplayer/.

Opening videos

The videos are offered in MPEG4 format. In general, commercially available devices can play the format without any problems. If you still cannot open the file, you will find a list of compatible software at https://www.dateiendung.com/format/m4v.

Payment options


You can pay quickly and securely via PayPal. At the end of the order process, you will be directed to the PayPal website. If you are already a PayPal customer, you can log-in directly with your access data and make the payment. If you are new to PayPal, you can log in as a guest or open a PayPal account and then confirm the payment.

Credit card

With the provider PayPal, you can also easily pay by credit card. All you need to do is register with the service provider PayPal to use this payment option.

Advanced payment

In the payment method Prepayment or Advanced Payment transfer the outstanding invoice amount within 14 days to the bank details specified in the e-mail directed to you. The download of products will be activated immediately after receipt of payment and you will receive a notification on the availability of content.