My favorite XHTML coding reference,
This review is from: Beginning XHTML (Paperback)
I am in my second college term learning web development. This recent purchase has become my best friend, my 'go-to' reference. Most any question is answered within, as most available tags are referenced to some extent. I have found very few discrepancies in this comprehensive guide to XHTML.
I think any responsible web developer should take it upon themselves to write entirely in XHTML. The transition from HTML is very easy with this text in hand, and the authors reference their working suggestions to W3C standards frequently.
My only desire in a HTML/XHTML text not satisfied relates to seldom addressed yet extensive discrepancies between various viewing platforms. However, few other texts do much better in this respect. If you have more experience with HTML development than me, you won't be bothered by this deficiency.