No heat styles for when you take the braids out: twist outs or braid outs. (I think I suggested this on your other thread ) I love twist outs lol.
Detangling: The easiest way for me to detangle is to saturate my hair with conditioner and then detangle in sections.
Oils: I'm not a huge oil user but many women swear by coconut and olive oil.
Hope this helps!