Someone who finished the game gives a good preview of what to expect (without going into much detail). All spoiler free.
http://www.youtube.com/watch?v=_8bG_-HnYLI (Crafting & Upgrade system)
http://www.youtube.com/watch?v=0E4l7e1fOc4 (Uncharted vs TLoU)
http://www.youtube.com/watch?v=oM9q0mgezY0 (Evolving Storytelling)
The Last of Us - Tips For Beginners (Spoiler Free)