How to study English well?please answer my question in Engli

If you aim is to travel America and Europe,i think you should know some words about your long trip.first,study simply sentence about booking tickets in airport and hotel.next should know how to express you request what order meal.last when you get lost in this city,how to find way back to hotel.you can train to answer this question.i think that would not very difficult for your overseas trip.