Close but the site you found actually decodes TAF's. They are similar to METAR but differ in many areas. So, don't study that page you found too much. A better resource I used when learning (apart from studying the FMH-1: http://www.ofcm.gov/fmh-1/fmh1.htm) is one of these two sites: http://atmo.tamu.edu/class/metar/quick-metar.html or http://weather.cod.edu/notes/metar.html#sky or if you want something to convert, there are plenty of sites that you can see the original and the decoded ones to see the differences. One is http://leonardo.met.tamu.edu/Weather_Interface/ and the other is http://heras-gilsanz.com/manuel/METAR-Decoder.html. While working at KSJC flight tower, I found learning TAF's took a bit longer to memorize compared to METAR's. But to each their own.
Staff Meteorologist/Night Observer, KMWN (Mt Washington Obs., NH)