Clear your schedule and find a safe place, preferably with an experienced or sober friend nearby
Eat a good meal and drink fluids, just as you would before a night of drinking alcohol
Start with a dose of no more than 1.5 - 5 mg
If you don't feel anything, don't sample more edibles for at least 2 hours. Better yet, wait a day or more and then up your initial dose by 5 or 10 mg. Do this until you find a level that is comfortable
IF YOU GET TOO HIGH - DON'T PANIC! Rest, drink fluids and distract yourself until the feeling passes, which should happen within a few hours.
It is not a bad idea to have THC-free snacks on hand after you take edibles, especially because it is hard to be satisfied with just one cookie or caramel
Drink water, relax, and stay away from driving or operating any kind of motorized vehicle
If you are new to edibles perhaps consider microdosing - taking very small amounts at a time like a bite of a cookie, or a quarter to half a teaspoon of coconut oil