Yeah, if you buy Reforged you can play the Classic version right now.
It supports a new widescreen HUD and uncapped fps, so it actually plays really good. (Up until somewhat recently, it was 4:3 stretched on widescreen with capped frame rate.)
I think it’s worth checking out the original game and learning the mechanics before reforged releases. WC3 is by far one of the greatest RTS games of all time, not even talking nostalgia factor.