Though Photoshop doesn't directly open InDesign project files, the two programs are closely related. Both are part of Adobe's Creative Suite 6 package, so the programs share common file formats.
SVG is short for Scalable Vector Graphics, a resolution-independent file format for images. This file format is frequently used for line art like logos and diagrams ...
Before designing your artwork you would decide what it will be used for. Maybe it will be used for one thing or it will be used for multiple things. Knowing what the artwork will be used for helps you ...