I frequently use the dictionary of the Real Academia Española: http://buscon.rae.es/draeI/
- If your computer has only an American keyboard (i.e. doesn't have keys for things like ñ or á for example), be sure that you have selected "Búsqueda por aproximación" or "Búsqueda sin signos diacríticos"
An interesting website, with a variety of articles related to the Spanish language is: http://www.elcastellano.org/
- Be sure to take a look at – and sign up for – the "word of the day feature": http://www.elcastellano.org/palabra.html
