get TO = arrive AT
to be ON the other side of the road
IN in more general situations
ON more specific
AT very specific
💬 "Think about" is used when you're actively considering something or concentrating on the thought of it.
Ex. Let me think ABOUT it.
💬 On the other hand, "think of" is used when the idea comes to you.
Ex. I never thought OF that.
In most other cases, they are very similar and can be used interchangeably. Especially for actions in the future.
Ex. I'm thinking ABOUT/ OF going on a trip