Direct answer
Objectives follow journal display order. Some depend on your choices; follow the active objective in the game.
Result
At one point during his travels Geralt learned of a master alchemist named Gremist. Rumor had it this druid knew more about alchemy than most men know about the contours of their own members. Geralt, ever eager to polish his skills, decided to find this learned druid and absorb whatever knowledge from him he could.
Game homeThe Witcher 3: Wild Hunt RemasteredAll games