SapixCraft is a very easy to play resource pack which significantly improves your minecraft experience by making your world as clean as possible. In addition you may notice that SapixCraft textures in some way look defaulty which makes it more unique. All these features together makes this pack one of the most visually appealing themed resource packs out there.
How to install
That is the default installation process for this type of material. So the actual installation might be a bit different. See additional links to find the original website of material.
1) Download the texture
2) Put in .minecraft/resourcepacks folder