I have gone through the whole book now. If you think that was quick it was because, as mentioned elsewhere, I already have Network+ and much of the material is familiar to me.
At work I have built and maintain web-sites which link to back-end databases, and have set up ODBC connections for people.
My main gripe with the book is the lack of editing, which leads to some erroneous info, and in one point a lump of text in the wrong place! I am also fairly sure that one of the questions in the test at the back has a wrong answer - in that the explaination doesn't fit the answer given!
One thing to bear in mind about this book is that it isn't complete. The intention, particularly in the HTML area, is that you should do lots of work learning HTML outside of the book, although it doesn't say so!
This was brought home to me when I tried the example questions on CompTIA's site, which asked about details not mentioned in the book. And if that isn't official guidance I don't know what is!
Harry.