It's interesting but just kinda lost on it also. May at some time give it a try.
If I can keep a starter alive and well anybody can.
Basically you take a clean jar, I use a 1 qt Ball jar, weigh the jar on a gram scale and write the weight on the jar with a Sharpie, you'll need the weight of the jar later until you dial the weight in.
#1-First step is to pop 4-6 holes into the lid using a drill or a small nail.
#2- Buy some organic unbleached All Purpose flour, I use Central Mills or Bob's Red Mills flour.
( It doesn't need to be organic but make sure is isn't Bleached/Bromated flour).
#3- You'll need a bakers scale or any scale the can weigh out grams.
#4- Weigh out 5 grams of flour and 5 grams of unchlorinated bottled water or well water if it's drinkable.
#5- Pour the flour and water into the jar and stir it up well and put the lid on it and put it in a warm window seal or on top of your water heater.
#6 - The next day add 5gr water and 5gr flour add it to the jar.
#7- Each day after that you want to pour out half of the flour mixture then weigh the jar to find out how many grams of the flour mixture are in the jar, say it's 10 grams. So to feed the 10 grams you will add 10 grams of water and 10 grams of flour and add it to the jar and mix it with the stuff left in the jar.
#8- Repeat this every day for a week, by now it should be rising after each feeding and dropping after 2-4 hours... if it is you have a sourdough starter going. If not keep feeding it until you get the rise and fall, it can take up to 10 days.
#9- once you have a healthy starter you can place it into the refer for up to 3 weeks without feeding it.
When you need it take it out of the refer 4 to 5 hours/ the night before you need it is best and feed it with.
Basically you feed it by adding the same amount of water and the same amount of flour by weight.
The reason you dump 1/2 is so you aren't wasting as much flour. Pour the waste half onto some wax paper or a cookie sheet and spread it out in a thin layer and let it dry until it's hard then save it for a rescue starter in case yours dies. To get the rescue starter going you grind it up and start feeding it with fresh flour and water. It should start rising and falling in a day or two.
So you feed is going to equal parts starter, flour, water, so it's 1:1:1 flour , starter and water.
It sounds way more difficult than it is, I've abused my starter and it's always jumped back to life after 1 or 2 feedings. You have to name your pet/starter, mine is named "Luigi"or Louie
It's best to use the starter at the top of it's rise when baking or making pizza dough.
I normally feed it about 1.5 hrs before I need it maybe 2 hrs in the winter time when it's colder in the house.
On top of the water heater is a good place to keep your starter during the colder months because it stays pretty warm up there.
If you need any help shoot me a message and I'll give you my phone number.
Honestly it's very, very easy to keep a starter going yr round.
Good luck.
Dan