Does anyone know the name of this story?
It starts out with twilight trying to create a doorway from ponyville to canterlot but ends up leading to a guys bedroom on earth.

4954901 Are you talking about The Princess and the Human? Where she creates the portal is different, but the last part is what happens to her.

4954926 Unfortunately it's not that story, but you've given me a new one to read, thanks!
In the story im looking for, twilight creates the portal at the start of the fic, inside the library.

I read Dat one... doorways I guess.

1) "Twy and Ty's Topsy-Turvy Tours"

2) "A Doorway to Another Place"