Widgets represent self-contained functionality and content, fragments of a complete, renderable page. They are the way to deliver functionality required on a page. Widgets can be created, edited and deleted by going to Control Panel > Administration > Site Administration > Widget Studio > Manage Widgets.
Widgets are included in Theme headers, footers, and pages to create complete renderable pages.
Widgets are created, editing, and deleted using Widget Studio. See Using the Widget Studio for more details on getting started with Widget Studio. After getting familiar with Widget Studio, you can review the other Getting Started with Widgets topics.
For best practices, see Widget Best Practices.
For how tos, see Widget How-Tos.