I want to learn the preposition easily? what can I do?
I have just spent the last few weeks teaching my students prepositions.
Divide the prepositions into time, position, direction, and location.
Commit each category to memory and make sure you understand it before going onto the next category. (Minimum of 90% on a quiz)
Use visual aids when you are able. For example the action of putting something into a box vs. in a box. My hand is over the cup on the table. The pen is behind the cup. Keep repeating and quizzing yourself until you get 90%, then move onto the next category. Repeat the above, and then quiz yourself on both . Repeat until you know all four of the above.
Best of luck.