Information on your files:
(tutorials are listed below also)
.png - translucent file you use for all of your marketing purposes. You use this file to "drag and drop" onto your business site. You don't need any special program to view this file.
.abr - upload this file into your Photoshop brushes to watermark photos. Here is a tutorial. This can be used as a watermark.
.svg- high resolution vector file
**What can you use it for??***
-Basically, this high resolution file will allow you to post your image on a billboard without losing the resolution.
If you want to view your .svg file, you can download the free program Inkscape.
***Click here for a tutorial on resizing your logo***