A lot of cardiology fellows use Oh's book, the Echo Manual.
However, there aren't really many books that I know of that will show you how to do an echo. It's actually not as easy as people think, and it basically needs to be taught by having people do an echo with someone who knows how...something that even a lot of cardiology fellowships don't do very well.
Reading an echo isn't quite as easy as you'd think either, although if you are just looking to rule out pericardial effusion and wall motion stuff, not as hard as really learning to "read" one.
Also I don't think you needed to be so snarky. There aren't many people on the cardiology forum. I wouldn't go on the anesthesia forum and then mouth off because someone didn't answer my questions about some airway issue or intubation ASAP...