Karma Ratna started his English language education under the watch of his mother in 1985. Later he attended the kindergarten at Gangtok from 1987 – 1988.
At the end of that year, he accompanied his parents at Panga Monastery in Manali to attend the Four Branches Empowerment given by Khenchen Thupten Ozer Rinpoche. When it was time for him to return to kindergarten school in Gangtok, he was very adamant about not going back to school. He instead expressed his steadfast resolve to become a monk. With no avail, the parents agreed to his wish reluctantly since he was the only child.
In 1888, Karma Ratna joined the sangha community of Drikung Jangchup Ling at the age of eight. In 1989, he took up novice vows from Drikung Chetsang Rinpoche.
He studied Tibetan writing and reading, history, grammar and linguistics under a tutor Sangay Tenzin at Jangchup Ling Monastery, Dehradun from 1988 – 1996.
He studied Tibetan and English languages, grammar text, and mathematics under tutor Tenzin Jampa. He studied Tibetan calligraphy and cursive under tutor Konchok Samten, and studied English language under Joan Loaber. He studied English language and computer education under Edoardo Zentner and Taklha Tenzin Choekyi.
He studied Fifty Verses of Sramana, Three Hundred Verses, Friendly Letter by Nagarjuna, and The Bodhisattva Way of Life under Khenpo Konchok Monlam.
He studied The Bodhisattva Way of Life on two occasions under Khenpo Tokdrol. He studied Madhyamaka under Khenpo Konchok Tashi.
He joined Zongsar Buddhist Higher College in 1997, Bir, Himachal Pradesh and remained there till 2005. He entered into a strict one-month Long Life retreat at Tso Pema monastery.
He studied Buddhist Logic and Reasoning, The Bodhisattva Way of Life, Mahayana Lamkara Sutra, Four Hundred Verses of Madhyamaka, Fundamentals of Madhyamaka, Valid Cognition, Tsema Namdrel, Abhidharma, Buddhist Cosmology, and other Abhidharma discourses under Khenchen Kunga Wangchuk, Khenpo Choeying Lhundrub, Khenpo Tsering, Khenpo Shenyen, Khenpo Choeying Dorje, Khenpo Norbu Tsering, and Khenpo Namgyal.
He received in particular an explanatory transmission of the Six Paramitas under Khenchen Kunga Wangchuk, and reading transmission of Manjushree Namasamgita from Dzongsar Khyentse Rinpoche.
He studied till Grade Sixth at Dzongsar College, and in the same year he planned to accompany his father Ontul Rinpoche on a visit to Lho Monastery inside Tibet. However, he did not get a visa permit from the Chinese government.
He instead then visited and stayed in Malaysia and Singapore for two months. After his return to Tso Pema Monastery, he undertook the preliminary practices of Gongpa Yangsab for four months under a strict retreat.
He studied discourses and treaties on Mahayana paramitas texts for his Seventh Grade at Dzongsar College in Bir, and studied treatises on Madhyamaka, and the Fundamentals of Madhyamaka for the Eight Grade at the Dzongsar College.
In 2000, he received the great empowerment of Vajrakilaya from the Sakya Trichen at Bir Pema Evam Monastery. Prior to that in 1987, he received Kalachakra Tantra empowerment from His Holiness the Dalai Lama in 1987 at Bodhgaya, Bihar.
In between 16 October, 2000 and 9 March, 2001 at Drikung Jangchup Ling, Dehradun, he received extraordinary reading, pith and empowerments of Drikung Kargyu tradition from Kyabje Garchen Konchok Tenzin Nyima Rinpoche.
He also received Fifty Initiations of Drikung Kargyu, essential initiations of dharma protectors, oral transmissions and empowerments of the Six Classes of Gongpa Yangsab in complete and sequential manner according to the tradition of Rigzin Choekyi Drakpa.
He received from his own father Lho Ontul Rinpoche the Essential Points of Stages of Path of Mahayana, the medium scope ripening initiation of the Great Bliss Sadhana of Nuden Dorje, Chod Empowerment, and eight volumes of Nuden Dorje’s teachings in entirety.