I'm looking for a UX book that has content similar to UX Myths. The book should cover frequent user experience misconceptions and show ways how to do it better. It would also be great if there are not only misconceptions but general approach for a good user experience. Its content should be limited to website interface designing.
From the sounds of your question, you're looking for a book with granular examples of individual patterns that can be quickly 'sprinkled' onto an interface to make it usable. Unfortunately, that won't make a major impact on the user experience of your product.
The biggest bottlenecks to user satisfaction are fundamentals like information architecture, intuitive workflows and an 'entity model' that matches the way users 'chunk' activities and objects. You can right-align your field labels all you like, but it won't make much impact unless users can reach your form and know exactly what to do next. Alas, these things can neither be taught by a single book, nor conveyed by a series of isolated examples.
Another point to raise is that UX isn't really something you should try to understand through reading in the first place - what you should really be doing is undertaking real-world usability tests with (ideally) a representative sample of actual users. That will identify the biggest issues far more effectively than just applying a handful of form design patterns.
I don't mean to sound dismissive - it's evident you're taking usability seriously, else you wouldn't be wanting a specific piece you could apply as soon as possible. But even if someone found a book that fitted your exact query, I don't imagine it being a tremendous help.
The book I can think of that is most like that site comes in book form and in web form. It is called Getting Real, and it is written by the guys at 37 Signals. You can buy the paperback, or you can read it free online.
As Jimmy mentions, following a list of best practices will take you only so far. When you're ready to jump into developing a deeper understanding of why some design practices work better than others, there are lots of great books on the subject. Here are three, in order, that I really enjoyed during my development as a designer: