There are so many great things in here; I just had to splurge them out.
-Instead of having only pregen characters for new players (which are the fighter, wizard, rogue and cleric) the player's guide in the box also has very simple instructions for how to make your own, "customized" version of those four classes. You can pick from an array of feats, skills, and equipment. It even includes rules for leveling all four classes from level 1 to 5.
-The character sheets provided have each area of the sheet (like skills for example) labeled with a letter (skills are "D") that corresponds to that section in the player's guide that's provided. This is such a cool idea, and it’s something that is sure to make character creation that much easier for new players.
-The player's guide includes options for race, skills, feats, deities, equipment -- just like the actual core rulebook but simplified for new players. As far as I can tell, none of the game mechanics are "dumbed down" (like Castle Ravenloft for 4e), which means that if new players enjoy playing with the Beginner Box, they'll enjoy playing Pathfinder!
-The player's guide also includes a sort of quick rules section for combat and status conditions which I actually might steal for my home games (easier than thumbing through a whole book).
-The GM guide included is really incredible. In addition to explaining the role of the GM, how to read stat blocks and craft a convincing narrative, it also details how to start your own game, with tips like: how to draw out and plan dungeons, how to balance combat encounters, settings you can use, story hooks, magic item tables, NPC suggestions, and several pages worth of monsters straight from the bestiary.
- In addition to a simple adventure designed for new players with a new gm, there is also a solo adventure that reads (and I assume plays) quite nicely. The simple adventure includes such things as: sneak attacks, traps, treasure, harrowing danger and even a dragon! Throughout the gm handout for the adventure are rules breakdowns for skill checks, combat, and monster tactics. Very nicely done.
-There is also a flip mat included. One side is blank squares (tan colored), and the other is the dungeon used for the adventure provided in the box. The dungeon side is easily reusable in future games (provided you have new players).
-The token sheets provided for the players and monsters are actually very nicely detailed and, at least for me, are going to see use in other games.
-There’s even a plug for Pathfinder Society in the form of a one page ad that comes in the box. Not entirely relevant, but it’s something neat that I’m going to post in my local gaming shop to advertise for Society, so it was nice to have a little more icing on the already superb cake that is the Beginner Box.