You have to scroll down until you see a Donwload Now button. Btw, on the right it says Name your own price. After that a new window appears, you can see there's options to donate, but it's not mandatory. You have to click in the upper side on No thanks, just take me to the downloads. Then a new tab opens up and you will see options to download the Windows, MacOS, Linux versions, etc. And that's it :3