im doing architecture atm, so i suppose i can help.
research up 2 point persepective and do a 2 point of a basic house from eye level. perspective drawing is fun and quite relevant
read up on typical ancient architecture, roman or greek or whatever. do a drawing of something relatively well known to that period and then label it with the architectural features of that period/style.(should be PLENTY of books in your local library, a book dedicated to what youre researching is better than a website full of shit)
find an interesting house from around you, and draw it(final draft in pen)
and draw and dimension your house.
real life drawings are always good, as in, go out and draw a building as you see it, not drawing from a picture at home.