Using R to perform more-advanced operations requires creating something that may never have existed. To create new things takes a nuanced understanding of precisely how prebuilt functions work. This chapter discusses how and where to find help and documentation for existing capabilities, how R operates with your computer system and files, and the ins and outs of data input and output. As before, please feel free to pick and choose which parts of this chapter you need. We start with the help files and documentation.