ABANDONED. White book, with yellow door/post-it on front, by male author. A male office worker finds portal to another realm in office and tells a friend of his after he enters.

[Chelsea]

Ending scene is the male, maybe named Joe, is having coffee with goblins at a cafe.

[Kris]

Chelsea, please post a new comment if you're still looking for this book - or if you found it.

Chelsea (OP) was last active on the site in August 2019. Moving to Abandoned folder.