@AudreyJ here is a link to our Reporting training toolkit: https://www.concurtraining.com/toolkit/en/data-insights/intelligence
You'll find training resources here. Also, if you scroll down to the bottom of this page, you'll see a list of live classes that we offer online. You can register for these classes. If you haven't used Cognos reporting before, then I highly recommend this class so you can get a good foundation of how the tool works. The class is geared towards those with little or no Cognos experience and you cannot beat the price. The classes are FREE. :-).
Let me know if you have any questions about the toolkit or classes.