I am a newbie to web development and web design I am reading a book called "Build Your Own Website The Right Way" which is from sitepoint, I have tried writing in the html which is written in the book in order for the pages to link and navigate between each other. I am not sure whether it is the book that has the wrong html or whether I am missing something.

I would appreciate it if someone called help me this as I cannot go further in reading this book unless I resolve this problem.