Why is my download not starting

when i hit download it brings me to the thanks for downloading page and it will say waiting for netstorage.unity3d.com at the bottom in the black bar thingy

What web browser do you use? Try cleaning your web browser cache and cookies or try using different browser. Considering we are talking about downloading Unity software (and not assets from asset store) I recomend using Mozila Firefox or google Chrome for that.