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Please, please, please refer to this page often! Keyboard shortcuts are not only useful for getting things done faster, but often represent a sense of professionalism when working with customers. Many times when I remote in or sit in front of a computer and start running run commands or command prompt commands, the end user will compliment me saying "finally, someone who knows what they are doing!" I would start by creating a spreadsheet of all the commands (manually type them so you can start to memorize them), and then create a most used list to reference often. Print a small page and keep in your cubicle or take it with you if you are an onsite technician - you won't regret it!