There is a lot to learn about the numerous technologies that work together to allow you to write a plugin. If it did not all sink in, that's okay, because we will be repeatedly exposing you to the ideas and techniques discussed in this chapter as we work through the following chapters. We have included an appendix at the end of the book that lists resources where you can get information about WordPress functions and plugins.
Hopefully, we have painted a decent picture of the landscape of WordPress plugins and their parent technologies. In the next chapter, we will dissect a typical plugin to find out what makes it tick.