How to download it and most importantly play it? (Warcraft 3: Reforged)

How to download a normal, normal version and play normally? Too much "normal".
When I go in, the first picture appears, nothing freezes, but it doesn’t plan to continue, it stays without action, it’s through battle.net, if I just download a torrent, a window pops up asking for some kind of key, how can I download it? Free and without problems, also if there are zero options, you can adjust the information about the paid one, thanks.