Another good way is to comb your hair with a wide tooth comb or a pick and start from the bottom up. comb about 2" from the bottom and get out the tangles then move up 2 more inches until you can comb from top to bottom and have no tangles. Combs are better than brushes, they will not break wet hair near as bad! =)

Better yet... use your vented plastic brush or a wide-toothed comb to distribute your hair conditioner and de-tangle while you are still in the shower; rinse carefully, while still combing or brushing, without using your hands to rub or scrub and mussing-up your hair. You will come out of the shower with tangle-free hair, ready to style.