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.
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"