Eduk8 has a guide to 100 Useful, Free Web Tools for Lifelong Learners which includes annotated lists of resources in the following areas:
- Open Courseware
- Books and Open Text
- Search Engines
- Public Access Libraries and Research Centers
- Podcasts
- Social Media and Online Communities
- Learning a New Language
- Government Sites
- Reference Guides and Dictionaries
- Videos
- Reference Sites
Posted by maeverest 
