1. Reciting Śrīdevī Māhātmyam (Durga Sapta Shati): There are three sections in Śrīdevī Māhātmyam - pūrva bhāgaḥ, madhyama bhāgaḥ (contains 13 chapters) and uttara bhāgaḥ. The following schedule can be adopted to recite (pārāyaṇa) Śrīdevī Māhātmyam spread over a period of nine days. Day 1 - pūrva bhāga; day 2 - madhyama bhāga chapter 1; day 3 - madhyama bhāga chapters 2 and 3; day 4 - madhyama bhāga chapter 4; day 5 - madhyama bhāga chapters 5, 6, 7 and 8; day 6 - madhyama bhāga chapters 9 and 10; day 7 - madhyama bhāga chapter 11; day 8 - madhyama bhāga chapters 12 and 13; day 9 - uttara bhāga.
2. Reciting Lalitā Sahasranāma and Lalitā Triśatī daily. Morning Sahasranāma and Triśatī can be recited (if time permits, archana can also be done) and in the evening pārāyaṇa of Śrīdevī Māhātmyam can be done. Khaḍgamāla can also be recited either in the morning or evening. Recitations during evenings and nights are better during navarātri.
3. Third method is to worship different forms of Parāśakti. During the first three days, She is worshiped in the form of Durgā Devi. In the next three days, She is worshiped in the form Lakṣmī and during the last three days, She is worshiped in the form of Sarasvatī. Pūjā with arcana can be done for them along with ṣoḍaśa upacāra-s.
4. Those who are initiated into Pañchadaśī or Ṣoḍaśī can do laghu navāvaraṇa pūjā during the first nine days and on the tenth day detailed navāvaraṇa pūjā can be done. Detailed navāvaraṇa pūjā can be done on the ninth day also. Morning and evening can be used for pūjā and in the night mantra japa-s can be done.
5. On the tenth day, one should do initiated mantra japa-s to the maximum extent possible. Tenth day of navarātrī is known as Vijayadashami, which is best suited for mantra initiations.
6. Some also worship ten Mahāvidyā Devis during this period with āvaraṇa pūjā-s.
7. Suvāsinī pūjā and bhojana (invitation for lunch) and kumārī pūjā and bhojana can also be done. How to perform suvāsinī and kumārī pūjā is available in the links given below.
8. The one who does any one of the above referred pūja-s on the day of mahā navami (the ninth day of daśarātra), attains liberation. Mahā navami day is the day of Śiva and Śaktī. It is also said that eighth lunar (aṣṭami) day is for Rudra and the ninth lunar day (navami) is for Śaktī. The conjunction of these two days is said to be auspicious time for worshipping Śiva. He gets whatever is desired during this birth itself. He lives a long life with his grandchildren. Finally he attains the lotus feet of Lalitāmbikā (Savyāpasavya-mārgasthā).