Mastering the use of technology is no different than mastering any new set of skills or body of knowledge. First you have to muck about or play. We are programmed to learn about the world around us by experimenting, by manipulating, by touching and so forth. When it comes to using the computer it is no different. But you also must be aiming for some end goal or destination. At some point, we need to know what exactly we want to accomplish and where we want to go. The play or exploration period helps us focus hopefully.