In Hour 11, Fonts and Typography in HTML5, there is an error in the hyphenation style properties list.
The code for hyphenate-limit-last on page 195 should read:
Rather than hyphenation-limit-last.
And in that same hour, The Guillemets in Table 11.1 are printed as << and >>. This is also incorrect. Guillemets are a different character from < and >. They should be displayed in the book as « and ».