Question: I am a youth who wants to be a caller to Allah, however, I do not have the appropriate method/manner. Are beneficial Islamic tapes and Islamic books sufficient [as Dawah], in that I establish to spread them or distribute them. Benefit Me, Jazakallahu Khairan?
Answer: “Yes, no doubt a person will not be firmly established in Dawah by himself, however, he will be firmly established by spreading beneficial books and tapes. However, based on the fact that if he is not able to call by himself, he does not spread these books and tapes except after presenting them to a student of knowledge to know what is in them of mistakes. Until this man does not distribute what has mistakes and he is not aware. He should also, rather it is from the methods of Dawah, that he makes an agreement with a student of knowledge that the student of knowledge writes for him [material] that calls to good. So this man supplies this man who is not capable of calling by himself”.
[Taken from: http://shamela.ws/browse.php/book-21804/page-35 ]
Faisal Ibn Abdul Qaadir Ibn Hassan