The name "Lauren?iu Nicola" is not formatted correctly in the book. Where I've written a '?', there is the sort of empty box one typically sees when a font is missing a particular Unicode character. Checking the online book, the correct version of the name appears to be "Laurențiu". One fix would be to transliterate it to "Laurentiu".

There's a space missing between the word "prelude" and "is" in this sentence: "The Prelude moduleis sometimes..."

Starting the paragraph, there is the reference: 'In the latter case, the list...' But the comment about the endpoint being missed does not apply to latter, but to second case: 'In the second case, the list...'

Instead of "hit C to halt", it should read "hit Ctrl-C to halt"

There's an extra 'S' following the quotes in the following: The empty string is written ""S, and is a synonym for []

There should be a space between "In Haskell," and "function".

"Then apply the odd function" should read "Then apply the isOdd function". isOdd should remain in code font.

The book reads: "to concepts that might be more familiar easier to understand" Missing: An "and/or" (better to use just "or") between "familiar" and "easier".

Note from the Author or Editor:
Add "or" between "familiar" and "easier".

Should read "Book" instead of "BookStore".

Note from the Author or Editor:
Change "fields of a BookStore" to "fields of a BookInfo".

wrong word, whether should be when in "followed by an expression to evaluate whether that pattern matches."

Note from the Author or Editor:
Change "evaluate whether" to "evaluate if".

Instead of Interact.hs, this should be InteractWith.hs, or the previous instances should also be Interact.hs.

Incorrect comment: import Data.Char (digitToInt) -- we'll need ord shortly should read: import Data.Char (digitToInt) -- we'll need digitToInt shortly

What is numbered as Exercise 9 is only part of Exercise 8

Exercise 2 is only part of Exercise 1 Exercise 6 is only part of Exercise 5

Note from the Author or Editor:
Make what is labeled as exercise 2 be additional paragraphs for exercise 1. Ditto for exercise 6 and 5. Renumber exercises as appropriate afterwards.

"Iin fact" instead of "In fact"

Drop plural "s" from "begins" in "Count the number of words in a string that begins with a capital letter[.]"

"... the definition of foldl' just shows illustrates how ..." should be either "just shows" or "illustrates" but not both.

Note from the Author or Editor:
Change "fold' just shows illustrates how" to "fold' illustrates how"

The sentence reads: "As such a programmer, we're...." That's a type mismatch. "a programmer" <--> "we're The sentence should read: "As such programmers, we're ..."

In "[-2^29..2^29-1]", the exponents are not displayed as a superscript. While the text as written is valid Haskell code, it also is not written in the font used for code. One or the other should be done.

Note from the Author or Editor:
Should be in code font.

All occurrences of "truncate" in the table are marked with an asterisk to indicate that there's a corresponding footnote, but the footnote is labeled with "a" instead. The title of the table does refer to the "a" footnote. The HTML version of the book (correctly?) uses the asterisk to label the footnote, and does away with the "a" reference in the table title.

Your reference to the 'fourth comma-separated column' might be OK in some programming environments, but it is really the FIFTH comma-separated column, although it is accessed by (!!4)

Note from the Author or Editor:
Change "fourth comma-separated" to "fifth comma-separated".

At the end of sentence "Many systems-oriented...": parenthesis is closed, but never opened.

Note from the Author or Editor:
Delete parenthesis after "fnmatch".

When you use regex-base-0.93.1 (Debian sid package: libghc6-regex-posix-dev (0.93.1-1)), '"I, B. Ionsonii, uurit a lift'd batch" =~ "(uu|ii)" :: [String]' causes an error because of an incompatibility of versions. See http://www.haskell.org/ghc/docs/latest/html/libraries/regex-base/Text-Regex-Base-RegexLike.html#t%3ARegexContext and http://hackage.haskell.org/packages/archive/regex-base/0.93.1/doc/html/Text-Regex-Base-RegexLike.html#t%3ARegexContext '"I, B. Ionsonii, uurit a lift'd batch" =~ "(uu|ii)" :: [[String]]' returns '[["ii","ii"],["uu","uu"]]' when you use regex-base-0.93.1.

Note from the Author or Editor:
Can we add a footnote or note box after the example immediately before "Watch out for String results"? It should read: "Some versions of regular expression support in Haskell do not support [String] and [[String]] return values from pattern matching."

"import Parse -- from chapter 11" should be "import Parse -- from chapter 10".

There's a duplicate "with" in the phrase: At best this will lead to C compiler warnings, and more likely, it will end with with a runtime crash.

Note from the Author or Editor:
Change "it will end with with a runtime crash" to "it will end with a runtime crash".

book reads: "We'll use a Haskell see HTTP library" The word "see" should not be present, and was somehow introduced due to a link to the library being involved.