Being clear is important. The most difficult thing when writing a tutorial on web standards is being able to explain to beginners the basic concepts behind a web standard. CSS floats may be difficult to use if you don't understand them well when you start using them. This video tutorial does exactly this: it answers the simple questions of beginners about CSS floats, namely what is a float and how can I use it on my web pages. My blog has a long way to go in this direction. smile