Guru Maharaj: You can also learn the process from the Mayapur Academy on Deity Worship. And also from the Minister of Deity Worship. Srila Prabhupada personally taught Jananivas prabhu how to worship the Shaligram Shila. The Shaligram should be worshiped everyday. At least bathe with water and put Tulasi leaf on it. But if you want you can also bathe with milk or pancagavya or pancamrita. And draw a smiling face on the shaligram shila with a tilaka. More details you can get from the Deity Worship Ministry.
14-Aug-2020 SRI MAYAPUR DHAM, INDIA