Based on your query, I would recommend using a combination of Nolej and Questionwell to create a case study and questions based on a YouTube video.

Nolej can take your YouTube video and turn it into a "micro-learning package" with interactive elements. This could be particularly useful for creating a case study, as it allows you to add pop-ups for key definitions and quizzes, making the case study more dynamic and engaging. The Activity Generation feature can create a variety of activities including MCQs, fill-in-the-blanks, True/False questions, and even games, which could be used to test understanding of the case study. The tool is also user-friendly and integrates with popular learning platforms such as Google Classroom, Moodle, Microsoft Teams, and Canvas.

On the other hand, Questionwell can generate questions based on the YouTube video. This could be useful for creating questions related to the case study. The Question Generator feature allows you to choose the topic, language, and question type (multiple choice, fill-in-the-blank, or short answer). The Question Bank feature extracts essential questions and learning objectives from the input text and aligns them with the generated questions. You can also edit or add your learning objectives and standards. The questions can be exported to various platforms such as Canvas, Quizziz, Quizlet, Kahoot, Blooket, Gimkit, Moodle, or Doc.

In conclusion, Nolej can be used to create the case study, while Questionwell can be used to create the questions. Both tools are user-friendly and integrate with popular learning platforms, making them a good choice for your needs.