What Are All The Different Versions Of Negima?

ok so theres a whole bunch of versions aparently. i know there is negima! and negima!? and then there are OVAs and i sound like a noob but what the heck is an OVA and ost? anyways i just want to know all of them because im obsessed and i want to see them all and not miss one bit. (i think there's some old version too cause it was in black and white.) also btw im talkin about animes not realy the mangas but if there are more than one manga feel free to tell me of them. thank

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