Take a close look at the photo. This is one of the “new design” staplers that takes advantage of the forward motion of your hand as you depress the trigger handle, to better drive the staple into the material. Yup: the staple will shoot out of the end of the tool that is being cradled by the operator’s left hand!
Always take time to familiarize yourself with a new tool, yes – read the directions. Those few moments may just save a painful injury, a trip to the doctor’s office, and an embarrassing call to your boss on the following morning, explaining that you can’t come to work today because you stapled yourself!