It is pretty, isn't it? I didn't download the pattern, but assuming it is truely entralac, it's knit in one piece. You knit one zig zaggy color block/row, then pick up stitches and knit the next 'row.'
If you're new to entralac, it would probably be a good idea to do a small project to learn the technique first. My first project was this dishcloth: http://criminyjickets.blogspot.com/2006/07/garterlac-dishcloth.html
You can also gogle "entralac tutorial" for some other good sites with directions.