If I would pay a bachur or yungerman to learn at a time that he otherwise would not be learning, would I get the schar of his learning? Is it a mitzvah to do so? May one use maaser money for this? (I am referring to a one-time arrangement.)
A person that encourages someone to learn Torah performs a great mitzva, and he gets some of the credit of the persons learning. In fact the gemora seems to hint that supporting Torah gives a person a chelek in olam haba. One may use maaser money to support Torah learning, especially if the person being supported is a poor person.