We are using this text for my 400-level Real Analysis class.  Having survived some terribly written texts, I appreciate the readability of this text, but I am finding lots of little spelling errors, sometimes even worse.  More troubling, in terms of editing, is that whoever digitized the book occasionally seems to have gotten symbols wring, or orders wrong.  For instance:<br><br>Definition 1.3.4: A real number a_0 is a maximum of a set A if a_0 is an element of A and a_0 =&lt;a for all a in A.  Without having the benefit of subscripts and a proper less than/equal to sign--"a_0" is "a naught" and "=&lt;" is "less than or equal to"--that is the definition verbatim.  Because of sloppy editing, I have a textbook that is telling me that a set may have elements greater than the maximum element.<br><br>Otherwise, I find the book to be the most readable math book I've ever had.  The homework exercises are appropriately challenging.  One thing that I really like with this Kindle edition is that when past theorems and definitions are invoked, there is a hyperlink.  There is also a handy search function.  All in all, I'm really very happy with the book and have no problems using it for my class.  My only issue is with the editing.