Śrīmad-Bhagavatam is the authoritative reference book from which to understand devotional service, but because it is very elaborate, few men can understand its purpose. Śrīmad-Bhāgavatam is the original commentary on the Vedānta-sūtra, which is called nyāya-prasthāna. It was written to enable one to understand the Absolute Truth through infallible logic and argument, and therefore its natural commentary, Śrīmad-Bhāgavatam, is extremely elaborate. Professional reciters have created the impression that Śrīmad-Bhāgavatam deals only with Kṛṣṇa’s rāsa-līlā, although Kṛṣṇa’s rāsa-līlā is described only in the Tenth Canto (chapters 29-35). They have in this way presented Kṛṣṇa to the Western world as a great woman-hunter, and therefore we sometimes have to deal with such misconceptions in preaching. Another difficulty in understanding Śrīmad-Bhāgavatam is that the professional reciters have introduced bhāgavata-saptāha, or seven-day readings of the Bhāgavatam. They want to finish Śrīmad-Bhagavatam in a week, although it is so sublime that even one verse of Śrīmad-Bhāgavatam, if properly explained, cannot be completed in three months. Under these circumstances, it is a great aid for the common man to read bonafide literatures, for thus he can actually understand devotional service, Kṛṣṇa, Lord Caitanya and Nityānanda. Śrīla Rūpa Gosvāmī has said:
aikāntikī harer bhaktir
“Devotional service to the Lord that ignores the authorized Vedic scriptures like the Upaniṣads, Purāṇas, Nārada-pañcarātra, etc., is simply an unnecessary disturbance in society.” Due to misunderstanding Śrīmad-Bhāgavatam, people are misled regarding the science of Kṛṣṇa. However, by reading Śrīla Vṛndāvana dāsa Ṭhākura’s book one can very easily understand this science.
Ref >> Srila Prabhupada Vani.