Guide me through my int based playthrough !

Basically the title, im overhelmed by reading the wiki, i want to do rogier and sellen quests before i visit ranni but they both take me way after i should visit ranni ?

What are some steps i should be looking for till i reach lvl 50, 100? I have general idea which sets and weapons i should be using then, im more for along the way tips.

I finished my pure str ( plus vit / end ) Ugg!Smash! build, want to try something more for a change :)