In simple terms, "into" is a preposition of movement and implies an action. For example, "He put the book into the bag". "In" on the other hand identifies a preposition of place, without movement. The car is in the garage.

That being said = nevertheless. To use the example of the other poster: "I like red. That being said, when I went shopping, I chose the black shoes over the red shoes."

Incidentally..I'm from Ottawa but I'm living in South America - Colombia.  I spent several years in various parts of Toronto.  I haven't seen snow in about 6 years and I can't say I miss it too much. :)

In Canada, it's common for people to take off their shoes before entering a home.  In the case of an apartment, shoes must be left outside, in the hallway.  The reason is practical; Canada suffers through cold and snow for several months each year.. Imagine how dirty your house would be if everyone walked in with boots caked in slush (wet, dirty snow).  The other reason is that Canadians often have carpeting in their homes.  As you can imagine, dirty shoes, even from the summer, would make quite a mess.  So, to prevent messes, we take our shoes off outside and walk around in socked feet.