1. Download selected pack from below by clicking on the button of the selected pack
2. Unzip the pack
3. Locate the unzipped pack
4. Open your Minecraft folder (For windows, Press Win+R, then type %appdata%\. minecraft, then press Ok.)(For mac, In the Finder, from the Go menu, select 'Go to Folder', then type: ~/Library/Application Support/minecraft, and click Go.
5. Locate the resourcepacks folder and open it
6. Drag and drop the unzipped file from your downloads into the resourcepacks folder