Here is the words from Rachel to learn Web ADF . Click Here
2) Take a hard cold look at the underlying technology running the ADF which includes a firm understanding of:
- ASP.NET 2.0 concepts like Themes and Skin Files
- Understand CSS very well
- Understand Ajax technology at a very fine grained level
- Understand how to debug embedded resources and use Visual Studio tools like script explorer.
Once you get these concepts, the ADF really aint all that bad. And I’m sure people will say well you shouldn’t have to learn all this stuff, but yeah I do, I’m a developer, I have to keep ontop of all this. If i didn’t touch esri technology, as an ASP.NET developer I’d still be expected to know all of the above technology.”