1-Don’t misplace or lose your time travel device.
2-Going to a time and place where another you exists is risky business so you better know what you are doing.
3-If you have a manual telling you how to travel in time then you better not lose it.
4-Don’t let crazy people travel back in time.
5-If you go back in time with technology that didn’t exist then for goodness sake don’t let someone from back then see it.
6-If you go forward in time be quick to recognize that you could be in trouble right away since you don’t know what you are heading into.
7-Telling someone from the future or the past you are a time traveler is a good way to get put in the looney bin.
8-Don’t move important historical figures from their time unless you absolutely have to.
9-Saving someone who was supposed to die could really screw up history.
10-If you travel in time make sure your device has the proper power to make the return trip.