1) The first thing is they cannot trust the first thing seen on a Google search because of the validity of the website. Anyone can put anything onto a website...doesn't mean it's correct or valuable information. Learning strategies is key for students so we can develop problem solvers instead of "I don't know what to do next." The second thing is digital citizenship is safety. Putting any type of personal information out into the web is extremely dangerous as many news programs have shown us based on true stories of students who don't know when to stop giving out information. Too many horrible people pray on the naive and the students need to understand that. The last thing that students need to understand about being good digital citizens is etiquette. Knowing when to use lol and when not to, knowing when to reply all and when to reply to sender, and being the same person face-to-face as you are online.
2) The websitehttp://www.commonsensemedia.org/educators has many links and articles about plagiarism, netiquette, and digital communication which in turn will help the students understand their role in the world on the Internet.
3) There are 4 parts to digital citizenship so I would split this up into 4 different lessons where each tab has a story about the what happens to students who have bad digital citizenship along with a list of the most common mistakes. It's easy to show all the wrong things but students do need to see the right things as well. I'll show them and have them demonstrate the right methods to being good digital citizens.
4) At the beginning of the year would be the best time for the parents to read and understand digital citizenship. Along with the papers from each class and the paperwork from the school, the parents are bombarded with papers but this is the most crucial time for them to read any new material going on at the school and in the classroom that concerns their child.