This is a series of presentations done by Zainab.org which provides insightful reminders to us. In this presentation 

Eternal Tips | Ayatollah Jawad Amuli | Importance of Tabligh and Muballigh

Eternal Tips | Ayatollah Mojtahedi Tehrani | Set to Travel?

Eternal Tips | Ayatollah Mojtahedi Tehrani | Anecdote about Ayatollah Khonsari

http://www.youtube.com/watch?v=RvsCpmR7WG8&feature=plcp