Lord Srinivasa is the most auspicious divine representation of Lord Maha Vishnu. Venkateswara's most prominent temple is the Tirumala Venkateswara Temple located in Tirupathi, Andhra Pradesh in Southern India. Venkateswara literally means "Lord of Venkata".The word is a combination of the words Venkata (the name of a hill in Andhra Pradesh) and isvara ("Lord"). the word "Venkata" means "destroyer of sins", deriving from the Sanskrit words vem (sins) and kata (power of immunity). Lord Srinivasa/Venkatesha is known as the Lord of Kaliyuga. He is regarded as “Nitya Kalyana Daivatha”. Goddess Lakshmi resides where Lord Srinivasa is. Srinivasa puja can be performed every day. The days special for the puja of Lord Vishnu are Wednesday and Saturday. Hence, Srinivasa puja is special on every Wednesday and Saturday. Vaikuntha Ekadashi is annually the special day for Srinivasa puja. This falls on Pushya masa, Shukla paksha, Ekadashi (during December).
It is believed that worshiping Lord Srinivasa will bless you with Longevity, wealth, peace and happiness. Also, it is believed that unmarried women will be blessed with prosperous married life. Here is the video to perform Srinivasa Puja.