Well, a weave is just basically your hair being braided/cornrowed against your scalp, then hair extensions are literally sewn in with a special thread and needle. If done well, your head should actually be a little sore for a few hours. You can also get clip ins, have the hair glued in (still not sure how that works exactly), or have the hair locked in through a series of tiny clip-ins (called Micro-rings, these tend to be for women who don't have hair quite as kinky as African-american hair). So I guess this knowledge is my birthday gift to you. That, and an upvote :)