It&#x27;s great to see this available and updated.  It was one of my favorite compiler books growing up because it&#x27;s so small and straight-forward.  I feel it&#x27;s a much better starting point for someone actually interested in building a compiler than say, the Dragon book.<p>Even more immediate and hands-on is Abdulaziz Ghuloum&#x27;s &quot;An Incremental Approach to Compiler Construction&quot; paper: <a href="http:&#x2F;&#x2F;scheme2006.cs.uchicago.edu&#x2F;11-ghuloum.pdf" rel="nofollow">http:&#x2F;&#x2F;scheme2006.cs.uchicago.edu&#x2F;11-ghuloum.pdf</a> (which chides Wirth for oversimplifying)