I think the best entry points are the ones that use time travel as a setting for a character journey, not just a puzzle. 'The Time Traveler's Wife' is my main recommendation for that reason. The rules are simple—he jumps, he can't control it—so you're not bogged down in paradox theory. The focus stays on the relationship and the emotional strain of his condition. It feels more like a romance with a sci-fi twist, which makes the concept very accessible. The non-linear storytelling might take a page or two to settle into, but it mirrors the disorientation the characters feel, pulling you into their experience.
Another solid choice is '11/22/63' by Stephen King. It's longer, but the premise is brilliantly straightforward: one portal to the past, one mission. The rules are clearly established early on. King spends a lot of time on the texture of the late 50s and early 60s, making the time travel feel like immersive historical fiction. The tension comes from the moral weight of changing history and the personal cost to the protagonist, not from deciphering complex timelines. It’s a thriller with a heart, and the time mechanism is just the vehicle.
For something completely different, the 'Chrono' video game series, especially 'Chrono Trigger', is fantastic. It presents time travel as a literal map you navigate, visiting distinct eras that each have their own art and music. The cause-and-effect is visual and immediate: a sealed chest in the future might be open in the past. It turns the grand concept into a tangible, playful adventure. That interactive element can make the 'rules' click in a way pure narrative sometimes doesn't. The story is surprisingly deep for a beginner-friendly package, dealing with fate and extinction across millennia.