You can find tutorials and online demos on this page.
APA guidelines
APA guidelines with Word (pdf)
Greeni Global Search
Basic search (online demo Summon)
Searching beyond the basics (online demo Summon)
Widely used information sources
CAB Direct (pdf)
Bibliographic software
Mendeley (online demo)
Miscellaneous
CRAP-test (criteria for evaluating internet sources, pdf)
Search smarter, search faster (dinosaurs help a student search for information that is relevant to his research, YouTube)
Why can't I just Google? (YouTube)