I hope you will be able to see their differences from their meanings:
to the inside of; in toward: He walked into the room. The train chugged into the station.
toward or in the direction of: going into town.
to a point of contact with; against: backed into a parked car.
(used to indicate inclusion within space, a place, or limits): walking in the park.
(used to indicate inclusion within something abstract or immaterial): in politics; in the autumn.
(used to indicate inclusion within or occurrence during a period or limit of time): in ancient times; a task done in ten minutes.
In is used to indicate inclusion within; into is used when there is movement.