Lye is not scary. Sometimes. Lol
Wash with water and not vinegar if an accident occurs and you get lye on your skin. Vinegar is ok for utensils, counter tops, etc.
Always dissolve your salt and sugar in your liquid before adding sodium hydroxide (I HP).
You will not always get the named stages while your batter is in the slow cooker so don't overcook your soap while waiting for said stages (pudding, mashed potato, vaseline, etc.) that won't appear.
You don't need to wait til the very end Vaseline stage before you pour because it sometimes might be too late. Semi-translucency is enough coz saponification will continue in the mold.
Do not invest in soap loaf molds if they're expensive where you're from because milk cartons work like a dream (smooth sides and edges even for HP) and so do Pringles cans. Besides, recycling is always better and those are no longer single-use lol (technically)
Unlined Pringles cans can be reused if you let the soap harden enough (no soap stuck on mine, twice) before pushing it out. That means you'll need a small hole at the bottom that you cover up while the soap inside is still wet. And, gravity is your friend. I held mine upside down long enough and the soap slid out lol
I'm sure over time I'll have a lot more to add here since I'm still a newbie to soaping but see what all I've learned just being here!