Creating Customized List Views

Use Grouping when Creating Customized List Views 

there are several custom views that can be created from the User Interface.  Customizing these views can be done with a click of a button and completely changes the default, out-of-the-box list views that are visible on the web pages. 

Some specific settings include Grouping and Styling.  A simple ‘Group By’ setting will
automatically create a collapsed view of the list which is especially useful
for large lists.

To further filter the list data for a particular user, adding a simple Filter clause of ‘ where user=[Me]’ will display only data related to the current user.