A great source of photos and other images, many of which are licensed under Creative Commons licensing. With careful attention to the type of license (using the dropdown under "Any license," you can find many great images that can be legally used without permission from the owner as long as you provide attribution and adhere to terms of license for each photo.
"appoLearning delivers thousands of apps, videos and websites – professionally vetted by expert teachers - that are searchable by keyword, category or Common Core State Standard. Additionally, any teacher can create and share Collections of their own favorite apps, videos, websites, or files (either web-based or uploaded) around a specific subject or lesson plan."
Diigo provides "social bookmarking, web annotation, tagging, and group-based collaboration." In addition to bookmarking and accessing bookmarks from anywhere, you can annotate webpages with highlights & sticky notes. One thing I always loved about Diigo was the ability to organize bookmarks into lists and share a link with someone directly to a specific list in your library of links. However in December 2014, Diigo eliminated the list feature and replaced it with outliners and limits the number of outliners you can create for free (there was no limit on lists). Free upgrades are available to educators for "special premium accounts provided specifically to K-12 & higher-ed educators." Once upgraded, you can create accounts for an entire class (no student emails required). Users in a class are automatically in a Diigo group and can collaborate, and "privacy settings of student accounts are pre-set so that only teachers and classmates can communicate with them." The number of allowed outliners also is greater with the upgrade.
Many of links focus on workshops and other services, but check out at least two links at the top: Storykeeper's Gallery (lots of examples) and Evaluating Projects - check out how you can use the interactive tool to create a customized scoring guide for your project by choosing the type/purpose of the story and then selecting criteria you wish to evaluate. The Storymaking Tools link at the top goes to a wiki with some great resources including a list of iPad apps for creating.
From University of Houston - excellent set of resources. Explore ALL the links at the top to learn more about digital storytelling, view examples, see a list of tools. Check out the "how to" link for great ideas on process including the importance of writing a script. The "educational materials" link has great ideas on how to use it in teaching and learning including how to evaluate projects created by your students.
This page will show you her posts that are tagged digital_storytelling. Browse through the posts for lots of great ideas.
Great video tutorials/screencasts broken down by topic. Login via elon.edu/lynda