Pokemon HeartGold & SoulSilver The Official Pokemon Kanto Guide National Pokedex: Official Strategy Guide

The guide to the Kanto Region is useful, following in the same pattern as the Johto guide already released and the Sinnoh guide released for Platinum. However, the real use for this book is the complete Pokedex.
The 'Dex has every pokemon in it, with the useful charts we've all been waiting for. Using this guide you can easily see the full set of moves a pokemmon can learn, from levels gained, TMs, egg moves, and moves taught by the Move Maniac or learned through the Battle Frontier. This is all on top of the basics you would expect from a Pokedex, being a list of abilities, egg groups, stats, pokedex entries, and even Pokeathlon perfromance. Also listed are ways to obtain each pokemon in all five of the fourth generation games.
Overall a very useful guide to some of the best games to hit the Nintendo DS.

Pokemon games have generally been released a few every generation. The original games (Red, Blue, and Yellow) for the GameBoy are considered the 1st Generation games; the sequels built for the GB Color(Silver, Gold, and Crystal) are considered 2nd Gen, etc. That makes the DS gen games the 4th Gen PKMN games, and this PokeDex/Guide is built with that in mind. New and/or revised move-sets, Pokemon types, evolutions, natures, etc. are detailed and described as they are in the newer 4th Gen games, that is Pokemon Diamond, Pearl, PLatinum, and the new SoulSilver and HeartGold. In other words, those looking for a complete PokeDex for any other game should look elsewhere. Those interested in the 4th Gen games are in for a real treat.

The ultra large (500+ pages) book does exactly what its title says; its a full Kanto guide and a full PokeDex, and it does both, for the most part, extremely well.

The Kanto guide contains full and detailed maps (as are seen in-game),...Read more

I'll agree with Veotho on essentially every point, I'd add that the Pokewalker information is also extremely useful, I'm a little disappointed that there isn't information on the Yellow Road special course that you get for going online with the game, because there are secret special Pikachu's to be had if you know the secrets readily available online. Other than that, it's a bargain and at Amazon prices they are way more reasonable than you'll likley find anyplace else.