Grammar- Prepositions

I always write, "I should of done that yesterday." Now I know better. The correct way to write that would be, "I should have done that yesterday." Here is a great way to learn what prepositions are and how to use them correctly, also the different types of prepositions.
Prepositions are words that specify place, direction, and time. There are three types of prepositions. Prepositions are words that specify place, direction, and time. There are three types of prepositions.
Time Prepositions -Define time. Time prepositions: In, At, On, For, During, While.
Place Propositions - Clarify the place someone or somebody. Place Prepositions: In, On, At.
Direction Prepositions - Direction prepositions are used to clarify the direction of someone or something. Examples: under, over, right, left etc.