SciFinder Training Materials include videos and tutorials in the following areas:
Visit the Reaxys Support Center
Science of Synthesis Training & Support site provides a Quick Start Guide and Video Tutorials.
Further information on SoS from Thieme Chemistry
Training Resources include videos, documents, webinars, self-guided learning to help you make the most of Web of Science.
The Scopus Advisor Community support page has short videos each about 5 minutes long covering topical searching and author identity.