Question on spell types

[Caridry]

So its been a long time since ive played (since PoP)... but im reading the p99 wiki on some things, and it says "you have paths conjuration and alteration" if i remember correctly you didnt have to pick a specific one, you just casted a buttload of times to lvl up that specific path... like if if summon water was conjur, you summoned a billion water to lvl conjur up, than you cast DD spells a billion times to lvl up your other path... do you actually have to pick now which is stronger? or a path?

so if you fizzled a crapton at conjur, you just summoned a bunch of water or pets to get your conjur lvl up... etc