I drink 2 sometimes 3 whey shakes everyday. After a while whey starts to really bother my stomach and becomes hard to get down. So every year to I go off whey for 6 weeks and order rice protein powder. It doesn't have the most desirable of taste and texture but according to the site I order it from it has an amino acid profile correlation of 97% as compared to a Whey protein.
But to answer your question it works the same as whey, add liquid and mix. comparable amount of protein per scoop.