Ok so now some actual tips regarding traveling abroad;
-about money, don't try to travel on a budget. If you're looking to really experience the place you are going to, my rule is to ask myself how much do I need (not including travel fees and accomodation expenses), and bring double that much. You just never really know what might go wrong, and you don't want to miss out on a certain activity because you're short on cash either. It should also ho without saying don't carry all your cash on your person. Have a bit of cash on hand, rest either in a popular credit card provider, or your personal lockbox in your hotel room, most of the decent hotels have one now.
-don't use local taxi services, especially around airports or terminals, you'll get scammed, dude will make a 5 min drive go on for 40. Use Uber or Bolt if available. Alternative could be rent a car but make sure you're familiar with the rules of traffic of the country.
-random people approaching you on the street are not always as friendly as they seem. Keep an open mind but be careful.
-nightclubs. When you order a drink, try to see what the waitor is doing with it. Never leave your drink unattended (e.g. Leave it while you go to the restroom). If a local is drunk and starts harrasing you for some reason or another (or none at all), you don't understand their language and you don't speak English or anything else. Back out and leave after selling that. Pro tip: waitors can be super helpful in pointing you in the direction of whatever place/activity you're looking for. If you plan to come back to the same bar multiple times, tip them. You will get much better service, and they will even help out if you find yourself in trouble.
-culture differences. Google is your friend, but even he doesn't know everything. Just observe behavior of people and try to understand the basic society norms, but don't try copying them if you don't fully understand.
-contacts. Google what the numbers are for police, and emergency services in the country you're visiting. Google where your embassy is and save their number, if by some chance you lose your documents, they are the only ones that can and will help you.
Can't think of anything else right now
Oh right, if you're traveling far away e.g different continent, don't drink the water from tap, or anything containing tap water, use bottled. Very important.