ProQuest has many great frequently asked questions and their answers on the Ebook Central Platform when you select the help button in the top right.
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Resources for: FAQs
Guides to support your use of the e-books for FE service
Frequently asked questions from FE Jisc members, answered by Jisc staff with help from ProQuest
Frequently asked questions from members, answered by Jisc staff with help from ProQuest