Rick Hanson has a short article on the third noble truth of the Buddha, the truth of freedom from suffering. You can find that article here: The Third Noble Truth – The Noble Truth of the End of Suffering.
Jack Kornfield has an article on the four noble truths that discusses the third noble truth, that there can be an end to suffering, stress, and dissatisfaction: You can find that article here: Suffering and Letting Go.
Walpola Rahula wrote a classic introduction to Buddhism called “What the Buddha Taught”. Here is a link to the chapter from that book on Nirvana, the end of suffering: The Third Noble Truth.
Insight Meditation of the Mid-Columbia