Working with List Views
A view is a way of seeing a filtered view of the records of a given record type. Views are available in the tabs for each object you find in the navigation for Salesforce and HandsOn Connect.
A view is the results you get when you set search conditions that display items that match the search conditions. For example, a view of contacts that have "Birthdays This Month" would filter your list of contacts based on a search for birthdays falling on a day in the current month.
By default, Salesforce.com includes a number of views for each object. But you can also create your own views.
Learn about working with Views:
Here's an article from Trailhead on the basics of working with List Views. (It's written from the perspective of someone who may have used views in Salesforce Classic - but introduces the improvements to List Views that are part of Salesform Lightning.
Click here to read "Work with List Views"