When you travel, it is a must that you prepare everything that you need to do and the things you have to bring.
First, list everything you need to do. Determine your purpose in going and list them by priorities. Then make a checklist on the things you will have to take with you.
Take enough money with you. Bring also a big allowance in case of emergency. When you're going to a different country, always have the country's currency in your pocket.
Don't forget your important papers and documents like several IDs, passport, medical documents, driver's license and ATM and credit cards.
Make an itinerary and leave it to someone in-charge or to your family so that will be easily tracked down in emergency cases.