Lucid Press is a web-based publishing app that you can use to create flyers, reports, presentations and other documents. You do have to sign up, but you can sign up with your Google or Yahoo account, or with an e-mail address.
You can start with one of their many templates. You can embed videos into your documents and connect to your Flickr and Dropbox accounts to easily insert images and files. There is a Google Image search within the app, and one for icons, too. One very good thing about Lucid Press is that you can collaborate with your classmates on one document with the internal chat function. You can also connect your documents and folders with Google Drive.
They have a tutorials section on the website, if you need help.