Guru paramparai means unbroken lineage of AchAryas. Our srivaishnava guru paramparai starts with none other than sriman nArAyaNan himself as we see in this lakshminAtha samArambhAm slOkam. It is out of the unbounded mercy of sriman nArAyaNan, he himself takes up the responsibility of clearing the ignorance in the minds of samsAris (jIvAthmAs who are bound in this material world) to rescue them and give them the ever lasting blissful life in paramapadham. So he became the first AchArya in our guru paramparai and taught the valuable meanings in sAsthram.