Bleach=chlorination
Borax= raise ph
Baking Soda=raise alkalinity

But yes you'll also need cyanuric acid (stablizes chlorine) and muriatic acid or dry acid (lowers ph).

More info: poolsolutions.com/gd/the-BBB-method-of-swimming-pool-care.html

Good luck! I'm sure someone will come along shortly to help you with your other questions