When you start up Blender, the user perspective is the default view you will use to construct your 3D model. The guide below is a general idea how to get started to get your view pointing in the right direction. This applies to with all created cameras in Blender as well.
Camera control, moving the camera:Rotate camera view = Middle Mouse Hold and then move the mouse around.
Zoom camera view = Middle Mouse Scroll Wheel or hold Ctrl Middle Mouse and then move up or down.
Pan camera view = Hold Shift and Middle Mouse then move left, right or up, down.
Add a new camera:
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