To use the Q&A Bib, all you have to do is register with us for free.
You will find the section "Q&A Bib" on the left side and can search for the exercises you need there. To do this, simply enter a topic in the search bar and browse through the topics, or use the filter functions if you are looking for topics on a specific module.
In the results displayed, you can then click on any task to open the task sheet. You will find the solution and an explanatory video on the procedure, if available.