Reddit reviews Pokemon HeartGold & SoulSilver The Official Pokemon Kanto Guide National Pokedex: Official Strategy Guide (Prima Official Game Guide)
We found 3 Reddit comments about Pokemon HeartGold & SoulSilver The Official Pokemon Kanto Guide National Pokedex: Official Strategy Guide (Prima Official Game Guide). Here are the top ones, ranked by their Reddit score.
The books are already larger that "pocket size", the one for BW2 is under $20. HGSS is the same price, also.
I'm playing Heart Gold and working on the National Pokedex. In the Safari Zone, I can place up to 30 items of different types in each zone to increase my chances of finding certain pokemon. I also own this strategy guide:
https://www.amazon.com/Pokemon-HeartGold-SoulSilver-Official-National/dp/0307468054
and in the Safari Zone section it has several examples of certain pokemon requiring more than 30 items (for example, Cacnea requires 35 forest items). How am I supposed to find these pokemon if I can only place 30 items in each zone?
I highly recommend this book for completing the pokedex. Volume one is good too, but if you have already beaten the game then you really are going to want to get the book linked. While I have not completed my 'dex yet, I am actively working on doing it, and this book gets into the gnat's ass about where to find each pokemon, its evolution etc. It also tells you what games the pokemon is available in (will help when knowing which ones you will have to trade).
Hope this helps.