If such videos or articles or whatever exist, then you will find them on the forum PowerExchange Adapters; the PowerExchange forum is solely for PowerExchange for mainframe systems and for PowerExchange for CDC, not for any other PowerExchange product line.
Please move this question there.
Technically it isn't so very difficult to upload data to SAP ECC.
It is basically the other way around compared to reading from SAP.
The important thing is to have knowledge available how SAP itself would change the data and make sure foreign key relations are kept in place etc.
Thanks for the feedback.