 this one is, with navigation
 links at the bottom of each page.

<p>Each chapter will start with an introduction describing its contents.
 Any other knowledge or chapters you need to know before reading the
 current chapter will be written after the introduction, in a
 &quot;pre-requisites&quot; section. Each chapter will end with a summary,
 refreshing your memory about the topics you have just learned about.
 Some chapters will conclude with exercises that you can try out and
 suggested solutions (althou