zip file you downloaded in the first step to the newly opened 'resourcepacks' folder. – folder titled 'resourcepacks' will pop up On the options menu, click 'Resource Packs.'.Launch the game client through the Minecraft launcher.– 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. Download the Serene HD texture pack for Minecraft from the download section below.– general recommended step for all packs, Optifine is also needed for most shaders Most resource packs require Optifine, so be sure to download and install it.