Faithful Resource Pack is a beautiful texture pack based off the original default Minecraft resource pack. Being so close to the original and double the resolution its easy to see why this is still one of the most popular texture packs out there!
1) Download the latest pack from the download section.
2) Run Minecraft, select “Options…”, select “Resource Packs”, select “Open resource pack folder”.
3) Drag and drop the downloaded pack into the resource pack folder.
4) Go back to Minecraft and select the Faithful 32×32 pack and you are done.