A Desktop Quick Reference , from O'Reilly by Jennifer Niederst. This is recommended if you do web design on a regular basis. Another good guide to web publishing.
Users can quickly look up the items.
The author shows readers the source and the result. If you run screaming from techie books, this is a gentler choice for you. This book concentrates in principles of web design and is an excellent introduction to publishing a web page. She focuses on design principles, rather than HTML specifics, so you will want an HTML book to go along with this. Information Architecture for the World Wide Web by Louis Rosenfeld, Peter Morville.