This is a very well written guide for the game, and indeed the series. It covers;
All the games mechanics in detail, including platforming, puzzle solving, and shooting without revealing any spoilers for the game itself. A recap of the previous two games and a guide to all the weapon loactions in both single player and multi player.
This is a great guide to the games in the uncharted series and provides a bit more background info direct from the Naughty Dogs themselves.
The only reason it gets 4/5 stars is that, i found some of the treasures have been copied and pasted onto the pages relating to the following chapter rather than the one you are currently on.