So, here goes:
The bucket is for mixing. The detergent jugs are empty and rinsed, ready for new detergent. You'll need at least three of them. The rag is for cleanup (you might think you won't need it, but I'm here to tell you "Yes, you will. Take it out now and have it close by.").
Grate the soap, using the cheese grater.
Place the grated soap and 6 cups of water in a large pot to boil.
You might as well take another big pot and put 12 cups of water in IT and boil it as well (you'll need it in a minute). If you only have one big pot, just wait until the soap is boiled, rinse that one out, and boil more water. You could also use a kettle, if you have one.
While you're waiting for those two pots to boil, you can measure up the Borax...
...and the washing soda. See? I told you there'd be a mess. That's ok, more washing soda is not a bad thing - it increases the "strength" of the soap.
Your soap mixture will start to look like lemonade and a bubbly foam will build up at the top.
When it boils and all the soap is dissolved, add the Borax/washing soda blend and mix well until it is all dissolved (no more grit). Keep the heat on until this is done.
By now, that other pot of water should be boiling. Dump everything into the bucket and stir well. Add 8 cups of cold water and whisk (just imagine that wooden spoon is a whisk, will ya?).
This is where the nasty old Brita jug comes into play. I use it to pour the soap into the jugs, but you could use a regular jug or large measuring cup. You could use a funnel (like the type they sell to mechanics for use during oil changes) to minimize mess, but I don't have one that big, so I take my chances. Also, you should do this with the bucket and jugs on the floor - that mixture is still HOT and will heat up/soften the handles on the jugs, making them dangerous to hold! The reason I didn't is that my floor is disgustingly nasty and there was NO WAY I was taking any photographs of it.
**Speaking of photographs, if you ever attempt to take photos while doing this, please be careful. Cameras don't like water. Especially when they are borrowed and potentially very expensive to replace.**
Ok, so once you mop up all the spilled soap and water (if you don't have any spilled water to clean up, I hereby curse you), you can stand back and admire your beautiful bottles of homemade soap. I forgot to mention that you can also add essential oils to the mixture (refer to the recipe for the right time to do that). That's why I have one red jug - for the lavender soap.
So, you ready to try it? Come on, you can do it! It only takes about 20 minutes.