GreenFile has a very comprehensive set of help pages. Click the Help link in the top right corner or click the 
That will open a page where you will see help related to the relevant topic. For example, if you click the question mark icon next to a Search button, you'll see help information about searching.
The help pages are not specific to GreenFile as all other EBSCO research databases work in the same way. So don't expect to find anything specific to GreenFile. That said, the pages are extremely detailed.
The help page opens as a pop-up page, so make sure you have pop-ups enabled in your browser options.
EBSCO offers regular webinars on using their products. The calendar is available here. Note that EBSCO offer a wide variety of products, hence relevant webinars may to a while to come around.
EBSCOhost Research Database Tutorials
EBSCO Information Services YouTube Channel
EBSCO Tutorials YouTube Channel
