A heavy-duty comb
A wide-toothed comb is the comb you need in order to detangle. If the combs teeth are too thin and close together you will break your hair and if the comb it too plastic it will snap and you will run through an entire pack before you finish your whole head. I personally love and reccomend the tan wide toothed comb and the denman brush, which can be found at any hair store/Sallys near you.
Hair utensils (scrunchies, clips, pins, etc)
I’ll leave this up to your preference, but detangling becomes easier the better you are able to separate the hair. Most people begin with four sections and then break the individual sections into more sections using pins and scrunchies. Be sure to have these on hand to make your detangling process easier!
Spray Bottle of Water
Do not, I repeat, do not detangle dry hair. There is no easier way to damage your hair than detangling your hair while it is dry. Keep your spray bottle on hand to be able to spritz water as needed.
You will indefinitely need patience to be able to work with your hair without breaking it, damaging it or giving up on detangling. Work from the bottom up, but be sure to take your time.