Take the Prepositions Quiz#1  from Dave's ESL Cafe

Prepositions Quiz#2

Prepositions Quiz#3

Prepositions Quiz#4

Concerning jokes and nationalities:

Americans and Canadians much preferred gags where there was a
sense of superiority – either because a person looked stupid, or was
made to look stupid by another person, such as:

Texan: “Where are you from?” 
Harvard grad: “I come from a place where we do not end our
sentences with prepositions.” 
Texan: “Okay – where are you from, jackass?”