There are basics for hair, like always condition and massage ur scalp, but in all seriousness it's a little different for everyone because certain ppl have certain hair types. The hair could be curly, wavy, course, straight, dry, oily and etc. Ppl won't always benefit from the home tips of singular people, they need to understand the basics for their hair type then get working for what works for them, especially when it comes to those with sensitive scalps. Even there it's hard for some of the black girls who have course and sensitive hair. How are they gonna work it too? I mean we all can't use chemicals and heat our hair till it all falls out to look like most of the hair styles here!

Hey, I have curly hair too.  If your hair is damaged, you need to grow the damage out.  Regular trimming on ends to keep split ends to a minimum.  There is a great book out all about taking care of curly hair ("Curly Girl" by Lorraine Massey).  If you really want to understand curly hair, go there because she too used to fight her curls and straighten her hair and now she embraces her curls and has some great tips.  For instance... and you may freak at this, but it really WORKS!  Don't use shampoo.  You really don't need it more than very occasionally.  You use conditioner and work it into your scalp to rinse away and oil, dirt, sebum and keep your hair clean.  Rinse well with cool water.  Then condition normally.  I brush my hair once, when out of the shower and then not again till I shower again.  To freshen hair on non wash days, I have a water spray that I add a touch of conditioner to.  My current fave conditioner is Herbal Essence Totally Twisted.  I also love their Totally Twisted curling mousse.  I know many say no store brands, but I love this product!  I get compliments on my hair all the time and people constantly tell me how nice I smell
Good luck!