For a video guide for the basics: https://www.youtube.com/watch?v=4e9aqgEJgvg

Fast start/patch instructions:

- Download a Japanese 1.0 ROM of Final Fantasy VI
- Using LunarIPS, included in this download, patch the below files:
- Patch the latest translation file, "ff6t-english-v307-A7"
- If you are wanting to play on the older version, check the folders for 297 and patch that instead
- Patch any optional patches or extra patches from the respective folders
- Download SNES9x-rr emulator v1.60 (optional, only if wanting to use the lua for quality of life, otherwise, skip this and use any emulator, 
hardware, etc of your choosing)
- Load the ROM/game that's all patched and ready (skip next steps if not using SNES9x-rr/the lua file)
- In the emulator, go to File-Lua Scripting->New Lua Script Window
- Find the file in the lua folder called "MatoQoL" and do NOT close the window once loaded, as it needs to remain open
- Enjoy

If you are trying to do the EX patch/reached the part to begin it in the main game (you'll know when; you'll find Moogle NPCs discussing it) 
do the exact same steps as the above, except for step 2, just patch the "ff6t-ex-english-v206-A7" file instead of "ff6t-english-v307-A7".

Make sure to load the EX on a CLEAN copy of the 1.0 ROM that was not patched prior. This must be a separate ROM file from the main game. Once 
patched, rename the save file of the main game (.srm is the save file) to the file name of the EX rom (back up the save file before doing 
this) and then load the EX game and enjoy. When finished with EX, or needing/wanting to return to disc 1/basic T-Edition, simply rename your 
.srm file back to match the .sfc file name of disc 1's ROM and load the game.