zip file you downloaded in the first step to the newly opened 'resourcepacks' folder. – folder titled 'resourcepacks' will pop up
– if there are many different versions, just choose the one you like, is compatible with your version/edition of Minecraft, the one you think your computer can handle in terms of performance. – general recommended step for all packs, Optifine is also needed for most shaders How to install Pulchra Revisited Resource Pack:
