Generally, how time travel works in your story isn't important, because time travel should be a MEANS to tell a good story, rather than BE the story itself. That being said, there are some instances where the how can inform the why, or complicate it. In this episode, Jesse & Jonathan go over the various modes of time travel, how they can impact a story, and the true meaning of time travel.
Your time travel story should never JUST be a time travel story. Use time travel to tell a more interesting story.
See you Yesterday
Harry Potter & the Prisoner of Azkaban
Bill & Ted's Excellent Adventure
Back to the Future
Back to the Future III
All Our Wrong Todays
The Butterfly Effect
The Time Traveler's Wife
The Future of Us