Quote from theminecraftgamer4321
OMG IT IS NOT WORKING! IM SO CONFUSED! >
Alright, here is the official OptiFine Forum thread:
Here is the download:
Now you need to wait for the download to 'get ready' there are a lot of ads. You will see your download link here:
After that, follow the instructions posted in this thread OR on the official forum of OptiFine.
Also, here is a video tutorial: