Comb/brush hair wet or dry?

Theres so many takes that i've heard on combing and/or brushing hair wet or dry....now im starting to get a little mixed up on the situation on how hair should be treated while wet or dry i've heard so many things and i want some other tips and tricks that you may use or heard of for hair in general...if this helps at all i am african american but i have had relaxer in my hair its been almost six months since ive stopped relaxing it so the only natrual or virgin parts of my hair are the roots and parts that have broken off (edges) the rest is sort of wavey straight so if your fimiliar with the tight curly hair type even if your not and you still have tips anything will be helpful

Thank you all help is appreciated

-God bless :)