There are hundreds of different prepositions and prepositional phrases. To learn them all will take years of practice. The best way to learn them well is by reading books, magazines, and newspapers. Listening to the radio helps as well. You can also learn about prepositions in class from a teacher, but it's important to realize that it requires a lot of practice and memorization. Some common prepostions are listed below in alphabetical order. I'll add more as I think of them.