Web of Knowledge has online tutorials for training. Go to http://wokinfo.com/training_support/training/recordedtraining/ to find them. Most tutorials are 5-10 minutes long and cover a specific search element or concept.
Web of Knowledge also has online training sessions that are live. These are open to all users however you have to register ahead of time to attend one. See http://wokinfo.com/training_support/training/livetraining for details on upcoming training sessions.