
When you go abroad make sure not to pack too many things. You will be buying things to remind you of your travels so under pack. Another good tip when packing is be sure to keep and store every bag you get from stores. This is really good packing material for breakables...and it's free.
Be sure when you travel to some place long distance you bring toilet paper with you. This is very important. There are some locations where you can buy toilet paper, but some loactions there is none avialabe...so bring a roll. Charmin is now making cute personal sized rolls. Don't be lured into that...bring a whole roll and your new friends will love your knowledge and your sharing. You may think this is a silly thing to note, but to me this was suprising and a vital note to mention.
Research the area and note what attractions you want to do which weekend. By knowing what each area is famous for you can guess or estimate how much you will spend buying the crafts of the area or if you will simply need more film for the area. For instance, Zacatacas is famous for jewelry...plan to spend nice sum here as it's a very beautiful city with wonderful local crafts. However, if you plan to travel to San Miguel you will take far more pictures and need more camara space.
Write down on a note card your new address. Every time you take a taxi you can get help finding your home and don't have to struggle with too much of a language barrier. Soon though you can even help the taxi driver get to where you're staying.
Talk to the locals and ask them what to visit. Be friendly and open and learn and love the culture. Live each day to the fullest!
Your planning and research will help you make the most of your adventures. Good luck and start your reseach!