Simple way of pleasing the Lord in kali yuga is nam sankirtan and surrender to his lotus feet. The main sloka is- “Atma Rama Ananda Ramana Achyutha Keshava Hari Narayana Bhava Bhaya Harana Vanditha Charana Raghukula Bhooshana Rajeeva Nayana Adi Narayana Anantha Shayana Satchidananda Sathya Narayana”