In Ciri's Footsteps - main quest The Witcher 3 Guide

It's a group of quests that you receive after finishing main quest Royal Audience. As the title suggests, this quest is about finding Ciri. Geralt must visit three different places. Other main quests are connected to this one:

• In The Nilfgaardian Connection you must examine Ciri's tracks in Velen. You should take care of this quest first.
• In Pyres of Novigrad you examine Ciri's tracks in Novigrad. You should travel there after completing your visit in Velen and after you develop Geralt to more or less 10th experience level.
• In Destination: Skellige quest you examine Ciri's tracks in Skellige islands. Leave this quest for later and start it no sooner than when you develop your character to the 15th level.