1.) To lead an online presentation I would use Microsoft PowerPoint as a visual aid for my project.  I would use this program for the simple fact of how easy it is to navigate and how nice the finish product looks. Another option would be Prezi but I find it very difficult to navigate and edit. Therefore I do not usually use it for simpler projects.

2.)To collect all my classmates’ online resources for a study guide I would use Email, The easy and most convenient to collect so much information from a large number of people would be to send the documents to eachothers’ email accounts. Ifbyou were not able to collect information from your classmates’ i would most definitely search Internet-Google to search the web for any information that i am missing. However, I would not advice using Wiki for information to study. I only say this because anyone is able to edit the information on Wiki, therefore there is a chance you could be collecting false information

3.) To create an interactive tour of Berlin I would use Prezi. Although this software can be hard to use but it delivers great results. Prezi is an interactive multimedia presentation and would perfectly display images and videos in a way to make it feel like a tour.

4.) For a collaborative research project I would use Mindmeister. Mindmeister would be a great place for the group to brainstorm and create a guideline for their project. Furthermore the group could use Wordle to share their mainb themes and put the project together.