There are three steps to gather this knowledge (i.e. Brahma Dnaya) – Shravan, Manan, and Nidhidhyasan. 

Nidhidhyasan means meditating on what we have understood from earlier steps, Shravan (learning) and Manan (contemplation). 

But, the usefulness of knowledge doesn’t end with the selection of the next life alone. 

If one pursues knowledge with sincere efforts along with contemplating and meditating on it, he/she can attain instant self-realization/moksha right here, while being in the body. No need to wait for multiple lives or to die to get there. 

As Bhagavad Gita says:
अपि चेदसि पापेभ्य: सर्वेभ्य: पापकृत्तम: | सर्वं ज्ञानप्लवेनैव वृजिनं सन्तरिष्यसि ||(4.36)
Even the worst of the sinners can cross this ocean of Sansara (achieve self-realization/Moksha), once they attain the knowledge (then what can we say about well-meaning seekers). 

In our scriptures, there are many examples of people like Maharshi Valmiki, who started their lives as the worst sinner, but finally got purified and achieved the highest state, because they got introduced to this knowledge, directly or indirectly. 

Such is the glory of this knowledge; it doesn’t just educate, it frees the knower, from the cycle of this samsara. 

For each one of us too, this knowledge is waiting in various books in our house, or all over the internet. 

There are many of us already exploring it. So, if you have not already started, there is no better time than today to start exploring it. 

All the Best!