make sure you get prebuilt versionand select the direct download option so all these defaults are perfectly fine go ahead and click on the link next to instruction number to download that package nowit downloads tgz (tar in gzipfilewhich you might not be familiar with windows is kind of an afterthought with spark quite honestly because on windowsyou're not going to have built-in utility for actually decompressing tgz files this means that you might need to install oneif you don' have one already the one use is called winrarand you can pick that up from xxxsbsmbcdpn go to the downloads page if you need itand download the installer for winrar -bit or -bitdepending on your operating system install winrar as normaland that will allow you to actually decompress tgz files on windows