Blender guides?

[hrk]

Hi guys, i'm new to this. is there any guide i can learn how to export the blender obj format. i manage to export it but in blender stuck in rendering .

[hrk]

i watched some online videos and manage to scale it and place it below mesh/work zone , but my render image output is only external.

is that something like i need to move my camera inside the house etc?

thanks