i have alot of questions on my mind that i didn't get answered on other forums, so any answered here are really appreciated, I am not using expensive gear and most of what i use is improvized from materials i have at home, the only exceptions is the yeast that i ordered online, its cider yeast i got from ebay and can reach up to 15% alcohol, here are some questions i couldn't find answers to

tap water vs mineral water, will there be benefits to using mineral water, will the taste be noticably different/better?

I got 5 grams of yeast in the packet and its stated that it is enough for 23 litres, now, should i dump the entire packet or should i proportion it and save the rest?, will it make the process faster?, i assume 2 grams will work just as well

how should i go around sanitizing everything before i create the batch, should i use dish soap?, can i soak it in bleach and just rinse it very well with tap water and dish soap afterwards or will that just defeat the purpose of sanitizing it?

how do i know when its finished?, when the bubbling calms down or stops?

also based on your opinions, how much sugar can i add to the batch without turning sweet in the end, half a cup?, i will use alot of fruits and dillute it in like 4.2 liters of water, so i assume a quarter cup sugar?

also when i add the sugar do i want to boil it along with the water i add?

thanks for any answers!