Teaching materials for the courses of the YouTube channel PeterHuy Lab, which includes scripts under Creative Commons license and problem sheets, can be downloaded under the section teaching materials. The password can be obtained from Peter Huy (peter.huy[at]uni-rostock.de).
This massive open online course provides an introduction towards organic chemistry including exercises in German. The script is available in the section “teaching materials”. The video description below allow a key word search and include hyperlinks to each course unit.