Here are some tips that I came up with to help you travel safely and respectfully...
1. Following laws in another state or country
Laws change when you go from place to place, even if it's just to another state. Be mindful of the laws in a place you're visiting; do research on them before you go. Just because you're allowed to do something where you live doesn't always mean you can where you're traveling.
2. Be kind to workers
Always be kind to hotel staff, waiters, drivers, store clerks, and other workers while traveling. Remember, you're in their state or country not your own; they may do things differently from where you live and when you're respectful towards them it also goes toward their state or country as a whole.
3. Trying new foods
If you're a picky eater you might not be up to trying new foods, or something just doesn't look good to you. I encourage you to try the popular foods and desserts of the place you're visiting. If you're doing this at someone's house, just get small portions so you don't waste it and show your dislike. Always thank and compliment people for their food. Food is a great way to get to know another place or culture.
4. What to wear
You should also research how to dress in a certain country. For some countries it's no big deal, but others are more modest and you must have certain parts of your body covered. In other places there's a similar mindset, but covering up is your choice (this doesn't mean you won't be looked down upon or get dirty looks).
5. Religious sites
When visiting a religious site, be mindful of their dress code and behavior. Some places you must remove your shoes, pray before entering, or be fully covered. Also be sure to check if visitors are allowed to enter before you go, because some places don't allow people outside the religion to enter. Do some research before you go to make sure you're following all the rules.
6. Ask before taking pictures or videoing
Taking pictures of the locals might be tempting, but they don't always like it. What they're doing or wearing may be interesting, but it's just a part of their everyday life. Unless they're putting on some type of performance or something else that they're aware will draw attention, make sure to get their permission for a photo or video.