Ha ha ha, the joke is on you if you are looking for the easy way to learn English prepositions - there is no "easy way!"
But with dedication, a determined study plan, and a good preposition learning resource, you can gain mastery of English prepositions in as few as 30-days.
Let's see how good you are at correctly answering the questions on this Quiz. The answer sheet is attached, but don't be tempted to peek - you're on your honor.
Did you get them all correct?