7.Read about scams on the internet prior to visiting any place.
Innumerable scams take place pretty much everywhere around the world. Some are specific only to the location you are visiting. Take some time to read about them carefully be it pocket-picking, scooty scams, jet-ski scams etc etc.
Be cautious from day-one and make the best use of the reviews given by the customers of popular travel sites.
8.Important contacts in case of any emergency.
As soon as you get your new sim, in case you are travelling with your friends..store their numbers and put them on speed dial.
Thai tourist police generic helpline number is 1155. It's important to keep it handy if required.
Also store the details of Indian embassy present in Bangkok,Thailand in case of any mishap.
Always always and always fully charge your phone and carry a charge-bank with you.
9.Don't be afraid to ask for help.
Local people of Thailand are very sweet and they'll try to help you in every way possible. We visited one of the schools when we were in Bangkok and we still have some cute vivid memories from that visit.
Always ask for help from multiple people whenever required.. don't shy away from doing so.
Get to know the people, the culture and the history of Thailand.