Understanding Logo File Formats -- Great info explained in an easy to understand logical way! Know which file is used for what and what you should use & get from your Designer! :) Great for referencing and learning....
18 Rules for Using Text [Infographic] – ShortStack
Social Media Image Size Guide - dimensions for the area to display personalized images that fit perfectly on Facebook, Twitter, Google +, and Pinterest
Modern - Powerpoint Template - Creative PowerPoint Templates