Gear is a widgets ready theme. Each page can includes system output(page content, posts) and widgets that are located in different positions. By default, the system output is disabled for the homepage, but you can enabled it via Gear>Layout>Content
The Homepage consists of widgets that are in different positions. You can manage the widgets in Appearance->Widgets. Assign widgets to specific pages with Gear->Widgets.
Logo can be set in two ways:
- in the theme settings - Gear>Settings->Logo
- in the widget of Logo position. Sample code here