I've been wondering for a while which one is correct "typical of" or "typical for". When you look it up in dictionaries they will give you "typical of". But I've come across "typical for" in newspapers and on the Internet. I have also read that "typical of" is more common in the American Corpus...
You use these when you refer to something which you expect the person you are talking to to know about, or when you are checking that you are both thinking of the same person or thing.
This and these are demonstratives, which means they indicate a specific noun in a sentence. The two words are similar because they refer to nouns that are near in space and time.