Over the last year using Blender I've found some really useful shortcuts and features. so I though I would compile a short list of some of the most useful ones that I use almost everyday. This article is geared towards beginners but more experienced users could find they missed a few of these. Enjoy!
1. Hover Copy/Paste
This one is the best of them all, if you read any of this read this! If you hover over a value or color and press CTRL C it will copy the value! No need to click on it and select it, just hover!
2. Random Node
The random node is an output from the "Object Info' node found under the "Input" folder. The random node has unlimited possibilities. In the example I linked the random output to a color ramp node with 3 colors, then plugged that into an emission shader. And as you can see it randomly selects one of the colors for each object.