Adobe Photoshop is used for a wide range of purposes, centered around photographic manipulation. In architectural design it can be used to edit 3D images.
The tools you need for post production
Adobe Photoshop is used for a wide range of purposes, centered around photographic manipulation. This can include image distortion, touch-ups, airbrushing or colour correction, but in architectural design it is mostly used to edit existing 3D images at the stage of ‘post production’.
An introduction to Photoshop.
This will give you a good idea of the basics, to then move onto more specific post production tools.