I personally am a fan of the Head First books, but it definitely depends on what you like. I would recommend that you go into your bookstore and read a chapter from each, and see which is the easier for you to understand. Clicking on the link for the book above will enable you to look at the first few pages of the "Networks and HTTP" chapter of Charles' book, likewise you can look at some of the pages of Head First Servlets and JSP, which might help you get a feel for which book you like best.
Have you asked the store that stocks the Head First book if they have Charles Lyon's book? Or if they can get it in?
That is thievery, and is illegal, and is not tolerated on this site.
Quite apart from the legal ramifications, when you are asking about these copies, you are effectively asking about how you can steal money away from members of this site: Bryan Bashham, Kathy Sierra and Bert Bates (the 3 authors of the Head First book) are all members here, as is Charles Lyons
Please stop and think about what you are doing. I assume that at some point in your future you would like to have a job. And you would, presumably, like to get paid for your work. If you are happy to take the work that others have done without paying them, then why should your boss ever pay you? Plus most religions will tell you that stealing is wrong.