If you still don't have,You need to download the program for extracting WinRar and Zip files. It's free and it's easy to find it in Internet. Usually sellers pack their folders with goods in zip or Rar archives. So just find WinRar program for extracting archives in Googl :) If you ave Mac OC, you have to find somebody with Windows to extract the files in the same program! So sorry for this, but here is always choise- to upload Archive for Windows of for Mac... If you have problems with presets (after extracting the archive), so in describtion under this set you can find the link on video about using them. Lightroom presets can only be used in Adobe Lightroom and won't work in Photoshop