Instructions or details for the buildings in Set 190
The instructions for that model are not included in the set.1

Youtube user BrickTsar LEGO® Collector rebuilt the model using the box as reference. The image below shows a screenshot from the video linked at the end of this post, it might be clearer to you how it was built. 



The model he made isn't an exact like for like copy of the model shown on the set, but is very close. It is possible you won't use all the pieces provided in  the set but it's worth checking that you have all the parts needed before you start using the inventory provided on Bricklink.

1 Youtube. LEGO 190 Building Set With People Farm Set from 1975 VINTAGE. Time: 1:58.