Okay can someone please explain to me how to distinguish between "esta" meaning this and that? I swear half the time I think it means "that" but it will really mean "this," and other times the reverse happens to me and I'm so confused.
Is there any difference between usar and utilizar? Can I just take them to be perfectly exchangeable? Or is it like English where "utilize" has a connotation to uses something up to its potential.