Please tell about differences between मकान and घर. Both of the words mean a house.
'मकान' is a house, or more specifically the physical building that makes up a house.
'घर' can also be used as 'house' but it is closer to the word 'home', ie, the place where a person lives. It is used in a more personal way.
Hey! Can someone explain why we’re not using वह here? I Must have missed a whole lesson on that topic!
This is the oblique variation of वह. They are mentioned shortly in the "Food" grammar part at the beginning (Quotation: "However, these are used in few categories of sentences and find no substance in this lesson other than being mentioned." This is one of the rare cases...)