If you are brand new to MailChimp there is no better resource for getting started than their MailChimp 101 user guide. It will walk you through creating email campaigns; managing your list; viewing campaign statistics; and much more. You’ll find it here: https://mailchimp.com/resources/mailchimp-101/

Official MailChimp User Guides and Tutorials

MailChimp provides a comprehensive set of user guides and tutorials including how to videos here: https://mailchimp.com/help/

Member Splash provides articles covering a number of common questions customers ask regarding the MailChimp connection. However their guides are the best source of information for questions regarding the use of MailChimp and will reflect the latest changes to MailChimp's platform.