Random life hacks: This is a pretty long list but you will find useful websites
Computer Hardware Chart: This is more a "photo- graphic" rather than an infographic. It's about a chart gathering the hardware ïntelligence both for computer freaks that love tuning and for new bees who wondering what the hell is in this box.
Use this list of free software! Open source, too!
Prevent the next Heartbleed! How to Create a Super Strong Password (Infographic)