It's great to have posting introducing the esoteric schools.

Just wish to add a word of caution that in the esoteric paths, it is extremely important for a Dharma student to obtain the transmission and oral instructions by an authentic lineage holder, before one could embark on the chanting of mantras, visualization of deities or other practices.
The reason for the necessity of the oral transmission and instructions is that the esoteric path is extremely special and it is easy for one to misunderstand the practice or venture the wrong way. As such, it is important for one to gain the proper instructions and permission from an authentic lineage holder.
I know that a lot of these pictures, mantras and visualization instructions are now freely available in bookstores and on the internet. But I just wish to protect the Dharma and the practitioners as much as possible by stating this. I'm not stating it on my own, but this has been expressed by many of my Dharma teachers.
If one feels inspired by the esoteric path and is interested to learn more, I would really encourage one to actively seek guidance from qualified Dharma teachers.
*PS: Bodhiruci I hope I didn't make you feel that I was criticizing your postings. Appreciate them and also appreciate your impartial attitude

Just wished to caution everybody about this.