The Libraries' subscription ended on July 1, 2023. For assistance in identifying an alternative resource(s), please email researchservices@mail.wvu.edu. .
A librarian at Texas State University has created an entire Research Guide dedicated to using the OED. It's very helpful--just remember that you'll need to access the OED through the WVU site, so links in the TSU guide may not work: https://guides.library.txstate.edu/c.php?g=184334&p=1219511
"This is a map of the wheel-ruts of modern English. Etymologies are not definitions; they're explanations of what our words meant and how they sounded 600 or 2,000 years ago."