Carry a phone card, charge card or change for the pay phones, in case you have your phone stolen or run out of battery. Always keep the number and address of the hostel/hotel where yo are staying in case you can’t find your way back.
Carry yourself with confidence when walking around a city and that you know where you are going. When absorbed in the sights try to be mindful of your belongings and surroundings. If you are traveling alone, exploring a new city can be a little scary, see if anyone where you are staying wants to go with you or find out about local tours.
The more prepared you are the better; find out about the local area do’s and don’ts, laws and regulations it could save you from getting in to difficulty or in extreme cases fined or arrested.