I'm updating this thread as I learn new things to help brehs and brehettes who want to take international vacations or become expats.
How to learn a language. I strongly suggest that you take a class I know Colombia has a six month visa for this if you go to a school. Schools will keep you accountable because it's hella easy to just hang around english speakers
That being said you don't need to take a class, Youtube is a great option. basically look up the most common verbs and their conjugations and study them at lest ten times, you can slow down the playback to remember it. I personally try to watch videos that are about 10 minutes long because it's hard to sit there and watch a long video ten times in a row.
secondly learn direections i.e left. right forward and back and things like wait here or stop and go. Things that you will have to tell a cab driver. Because and extremely common uber scam is to act like they don't know where you're going and sometimes you won't know either generally the Uber is a decent price but they can up it by stopping and making wrong turns that will up the Uber price and it doesn't cost them much in gas.
Another thing you can do is to watch News channels with a short ten minute story, usually there's visuals or what happened and TV news people speak the best local accents so If you wanted to go to say Mexico listen to Mexican TV News shows and that will give you the local accent. Getting the local accent's down is extremely important because you will not be understood like for example Derecho means straight ahead and derecha means right as it take a right. Easy to get that messed up and in Spanish the double LL sound is pronounced like a J sound in English you use the L sound in english and you will be misunderstood.
What I can tell you that doesn't work is flashcards. No one says words like Chair or Table. people say Have a seat at the table learning random words isn't helpful you have to put them in context or a sentence.
Consider getting a kids grammar book, they are cheap and again they use words and sentences.