Hello, I've been using Community Surveys for a while and like it. I just got the Community Quiz and create my first quiz.

1. I don't understand the "marks system" vs "response (correct answer) system" Is there more info about I can read? I want to grade my students for each complete correct answer and I would like them to know the percentage of correct answers they got.

2. I want to create a free quiz (not my students) but I want to collect their info (name and email). What would be the best way to do this? 

3. How can I show a message "Congratulations you passed" At the end without showing all the answers?  Also, how does the "Scorewise Messages" show? Do I need to create a message for each 1 point up to TOTAL POINTS (100 points = 100 messages) or how can I select a message from 10 to 30 points o 1 to 3 correct answers?

4. Where can I see the explanation of the data show at the end and can I decide if I want to show only certain values? (see image attached)

Thanks.