To say that you are “talking to” someone denotes a soliloquy; whereas saying that you are “talking with” someone denotes colloquy. Using the preposition “to” in the aforementioned scenario expresses that you did most of the talking. To use the preposition “with” in the aforementioned scenario expresses that the conversation was on an equal footing of give and take.

The preposition “in” is used to represent an action within a certain area. The preposition “into” is used to express a motion towards an area from outside of that area. For example: The boys swam in the lake. (This would denote that the boys were already in the lake.)
The girls dove into the lake.