That's it - not much to it. Notice that you didn't need to know any programming code, or even leave Rhinoceros, in order to write these macros. You only used the basic Rhinoceros commands, which are learned easily from the help files and from practice. You learned most of the syntax, symbols, and protocol for writing successful macros in Rhinoceros just from these examples! No need for compilers or anything else. It's really a testimony to how brilliant the programmers are for making it this simple.
By now you should be comfortable making commandscripts and assigning them to Icons. You learned Rhinoceros' easy command syntax and you have made all the custom Icons and the one command alias that you will need to tackle the advanced scripting in the next chapter.