For me this season is the season of deep immersion into Siddhanta of "Shree Vishnu-Purana", but occasionally I turn to Sanskrit-Hindi scans of other Puranas as well.
One of the Chapters in "Shree NaraSimha-Purana" is dedicated to Shree Ashtakshara-Mantra of Bhagavan Shree Narayana.
Below is a little synopsis of Narayana-Mantra-Siddhanta from "Shree NaraSimha-Purana".
Shree Ashtakshara Mantra is suitable even for those, who don't have an adhikara for complex Vaidik/PanchaRatrik rites.
The unique feature of Shree Narayana-Ashtakshara Mantra is that it causes "immediate enjoynment" ("tatkala prasanna") of Bhagavan Shree Vishnu and grants Sayujya-Mukti without any hindrances!
If you make Pujas with Shree Narayana-Ashtakshara-Mantra, then there is no need to visit Vaishnava-Tirthas or make complex Vaishnava-Yajnas, because Shree Narayana-Ashtakshara-Mantra grants
