Saying Psychology is a useless subject won't make many friends, Ford.
Oh, what happened?
I dunno, I didn't even do anything to him. He's just being Ford for lols.
Must be bath salts.
1. get optifine
2. go into your file explorer and, in the address bar, type %appdata%
3. click into your .minecraft folder
4. check to see there should be a shaderpacks folder in there
5. if there is, download whatever shader you want for the minecraft version you're running
6. put the zipped shader folder into your .minecraft/shaderpacks/ folder
7. run minecraft
8. load into a world
9. hit esc key
10. there should be a shaders button visible or under video settings
11. pick the shader you want to use from the menu
12. hit esc again and it should apply to your gameplay now
13. enjoy :)
I forgive you, Ford.