Theres a lot of lore to every Dark Souls game, but you often need to piece it together from environmental scenery and subtext in character interactions; also make sure to read the description of every item like weapons, armors and key items, thats where the majority of the lore is.
My favorite bit of lore in the game is on the Nomadic Merchant's set, which reveals the merchants you've met all throughout the game belong to a race that gained way too much power through trade and were mostly genocided, with the last of their culture being buried in an underground prison to die. They then proceeded to summon the Frenzied Flame into the world to return everything to primordial chaos. When you first speak to Kale at the little church at the start of the game, his comments about the land being "tainted by madness" and how his people are "deeply unforgiving to any that harm his kind" become extremely ominous after you learn this. Oy vey, Tarnished.