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If someone wants to get better at saying one of the Kaddishes (Kaddish d'Rabbanan, Kaddish Yatom [Mourners], etc.), is it permissible to say the Kaddish out loud by oneself?
Kaddish is classified as a davar shebekdusha, a ritual that requires a minyan be present. Almost everyone agrees that Kaddish should not be said in a liturgical setting without a minyan. My question is whether an educational setting is different. Can one sit alone with a siddur to practice saying the words? May they be pronounced out loud, which would probably be the more effective educational technique? What is the general rule regarding practicing prayer while not actually praying?