Where cani learn about knives.

[multi]

Just wondering whether theres a book that can teach me about different steels and theyre purpose, or if someone can help educate me.

So far I know stainless steel doesnt rust as easy.
Something about only buying moras, because everything else is just pointless and unessesary.
I dont think ill ask for opinions in this one..

But what are things like

Japanese Aus 8a steel
110x18 stainless steel
440 steel
12C27 sandvic steel

Etc etc

And whats there purpose.
Thanks
Adam