Thiruvilakku Poojai

[Urmila]

Hi,
Am in need of knowing the exact and full details on how to do this puja ? What slokams should be chanted, how many days, must we fast, what should be as naivedhyam --- can someone tell the proper method to do this please ?
thanks ,
Urmila.

[Idiappam]

And what is the purpose and benefit of this poojai?