Purva Mimamsa is one of the six orthodox schools of Hindu philosophy, which primarily focuses on the interpretation and analysis of the Vedas. It is considered to be the oldest of the six schools and is believed to have been founded by sage Jaimini. The main emphasis of Purva Mimamsa is on Vedic ritual and dharma, which are considered essential for attaining liberation or moksha.

The main practices recommended by Purva Mimamsa revolve around the performance of Vedic rituals, which are prescribed in the Vedas. These rituals are known as yajnas and are considered to be the primary means of attaining worldly and spiritual goals. The following are the main practices recommended by Purva Mimamsa:

1. Study of the Vedas: The first and foremost practice recommended by Purva Mimamsa is the study of the Vedas. The Vedas are considered to be the ultimate source of knowledge and are believed to contain the essence of all the Vedic rituals. The study of the Vedas is considered to be essential for understanding the purpose and significance of Vedic rituals.

2. Performance of Vedic rituals: Purva Mimamsa places a great emphasis on the performance of Vedic rituals. These rituals are believed to have been handed down by the gods themselves and are considered to be the most effective means of appeasing the gods and attaining their blessings. The performance of these rituals is believed to bring about material prosperity and spiritual progress.

3. Adherence to dharma: Purva Mimamsa also stresses the importance of dharma, which refers to one's duties and responsibilities in life. It is believed that by following dharma, one can lead a righteous and fulfilling life. Dharma is also considered to be the foundation of all Vedic rituals and is essential for attaining moksha.

4. Importance of karma: According to Purva Mimamsa, karma or actions play a crucial role in shaping one's present and future. It is believed that by performing Vedic rituals and adhering to dharma, one can accumulate good karma, which will lead to a better life in the future.

5. Preservation of Vedic traditions: Purva Mimamsa also places a great emphasis on the preservation of Vedic traditions. It is believed that the Vedic rituals and practices have been passed down from generation to generation and must be preserved for future generations to benefit from them.

In conclusion, Purva Mimamsa recommends the study of the Vedas, performance of Vedic rituals, adherence to dharma, importance of karma, and preservation of Vedic traditions as the main practices for attaining worldly and spiritual goals. These practices are believed to bring about a harmonious balance between the material and spiritual aspects of life, leading to ultimate liberation or moksha.