Easy Install Full
Watch this short video that will show you how to easily install the play-minecraft.us resource pack, optifine and all the settings it will do for you.
Download: Full Installer [DOWNLOAD]
If you only need to update
If you already have MultiMC installed then all you need is to download and import the New Resource Pack.
Download the new current version here. After downloading, Open MultiMC and Import a new instance Like shown below.
Then browse for the file you just downloaded
That’s it, your ready and updated. Anytime there is a resource pack update just download from the link above and repeat the update steps.