The Sutta Pitaka contains the Buddha's discourses. These are among the most important for practice:
Dhammacakkappavattana Sutta
ธัมมจักกัปปวัตตนสูตร
Setting the Wheel of Dhamma in Motion
The Buddha's first sermon containing the Four Noble Truths and Middle Way.
Avoid extremes. Follow the Middle Way to wisdom and Nibbana.
Satipatthana Sutta
สติปัฏฐานสูตร
Foundations of Mindfulness
The most important discourse on meditation practice.
Mindfulness of body, feelings, mind, and mental objects is the direct path.
Anapanasati Sutta
อานาปานสติสูตร
Mindfulness of Breathing
Detailed instructions on breath meditation.
Through mindful breathing, develop both calm and insight.
Metta Sutta
เมตตสูตร
Discourse on Loving-Kindness
Instructions on developing universal loving-kindness.
May all beings be happy, free from enmity and anxiety.
Mangala Sutta
มงคลสูตร
Discourse on Blessings
The Buddha describes 38 highest blessings.
True blessings: not associating with fools, honoring the wise.
Karaniya Metta Sutta
กรณียเมตตสูตร
Hymn of Universal Love
Beautiful verses on cultivating boundless loving-kindness.
As a mother protects her child, cultivate boundless love.