What Campaign books are there?

[xLegionx]

Hi everyone!

Im relatively new to Pathfinder and I plan on writing a book about a drow assassin(Surface-born or living in Zirnakaynin/Dark lands I havent decided yet) and I was wondering about the campaign books. Sadly, I lack a great deal on the fantastical world of Golarion and I was wondering if anyone had any recommendations on which book I should buy. Im leaning towards Inner sea myself but I would like to hear everyones opinion before I decide.

Thank you!

[Coyote Toledo]

Hi.

The Inner Sea guide is the place to start, it also provides a nice overview of the world, and goes into nation-level detail on the Darklands.

Easy answer!

[Jeven]

Into the Darklands campaign guide covers the drow and also part of the Second Darkness AP.

[Cpt_kirstov]

The Armageddon Echo has an entire article on the drow.