Well I been saving my maps in my old Sc2 beta folder, but I just can't find the normal Sc2 folder... Anyone know? So I know where to save to?

Since the maps you download from Battle.net 2.0 save as cached files, I don't think there is a map folder anymore. I may not be getting what you're asking, though.

You can download maps via the editor, so you can edit it (for the case it is not locked)

And as for saving them, I believe you can save them anywhere since that had no effect on your SC2.

StarCraft 2/maps

When you open a map in Starcraft 2 Editor, you can save it anywher eyou want. There is a standard folder that it selects, as already stated it's in your documents folder -> StarCraft II -> Maps. BUT! You can save a map to anywhere you want, and either right click to open it in galaxy editor, or browse to open through the Galaxy Editor. Either way, you can not download a map and rehost it on b.net out of the blue, since the maps are catched, that means they are only temporarly on your computer while you play. I do belive, that if you look in your recently played, or favorites when hosting, you can find some of the maps that have been published to b.net and are not set as private, then host them through that, obviously - else no one would ever be able to start a game - but keep in mind, hosting a map in Starcraft II is not about hosting, it's about joining, you join the game you want to play, if no previous game exist, you will automaticly create a new lobby, and become the first member in the game.