I am in the Outskirts of Vizima and I have only to the Aard sign available for me to use because all my other signs are grayed out in the upgrade area of my signs. Is this a bug or am I missing something. I have not played since the game came out many years ago. What do I have to do to use other signs besides Aard? Thanks!!!
You have to unlock them by touching Circles of Elements.
Outskirts of Vizima is chapter I as far as I remember and In chapter I there is only one circle that unlocks Igni. You'll find it by exploring the location a bit more.
Here is a link to the wiki if you want to find them faster:
Circle of Elements
A Circle of Elements (also called an Elemental Circle), and not to be confused with a "Place of Power", is a place where magic is strong, enough for people to have erected monuments. Mages can draw power from Circles of Elements, and witchers can learn new Signs, as well as getting a momentary...
witcher-games.fandom.com