well most people don't teach for legal reasons, especially online. you could get advice but not regular teachings. i suggest joining an online coven that teaches through the forums or chat to help you.
'dark magick' isn't real, it's all from the same source, so if you learn how magick works, you can use 'dark magick.' bellow are some links that should help, but there are some books you might want to read.
regarding Astral Projection, you should check out that section of the forums. you might also want to work on meditations and perhaps chakras before you try projection because you need to be completely relaxed.