I recently made a document that you could print out and hang on your wall to assist students in finding the Tumblebooks link. There are quite a few steps, so it might be helpful for your students to use it as a guide. This is mostly applicable to East Noble students using iPods. Feel free to use as necessary.
Also, for this to apply to your classroom, you need to be using the Symbaloo links that Zack and I created. You can get those working on your iPods by viewing this link: