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Please don't be afraid to TRY communicating with what little Spanish you may know.

Wise advice, as always. The locals love it when you speak the most rudimentary Spanish. It might be difficult for you at first, but don't be afraid to sound like a fool. It's the best way to learn a language. Think about how most everyone in Canada and the U.S. will do their best to help someone who is just learning to speak their first words in English. (The exception, of course, is those who will remain nameless -- Trump supporters! Forgive them, for they know not what they do. Immigrants are what has made the U.S. what it is.)

One of the best systems available is the Pimsleur method. It is expensive but very good and will get you speaking in a few months. Check your local library as they may have it available to check out.