I'm looking to buy all the glyphs before the system is revamped to hopefully save money before everyone is buying glyphs, and was wondering, do we need to learn all the glyphs? Or will the glyphs we already have socketed be learned and we only have to learn the ones we don't have? Glyphs are starting to become expensive as hell already, so would like to make sure I don't buy something I don't need. Thanks.