Search Kit is a powerful search that allows for advanced queries and displaying options.
Here's CiviCRM's documentation on Search Kit..
Understanding how the database entities relate to each other helps when you are creating a search kit search. If you are a visual learner, we have a diagram of these relationships.
Here is the screen cast of how to use Search Kit:
File attachments:
Category:
Learning Powerbase
Organizing with Powerbase
Search