learnskill command

learnskill'Skill ID'
Command effect
This command will make Geralt learn the skill with the specified skill ID (or talent code). Enter the command again to increase your skill level in that skill. A list of all skill IDs is at gamesref.com/games/witcher-3/skills.
Example
learnskill('sword_s3')

How to enter console commands

You will need to enable the console in order to enter commands. To do so, go to the folder The Witcher 3 Wild Hunt / bin / config / base / general.ini. Open the general.ini file with Notepad. Under [General], add DBGConsoleOn=true. Save and exit the file.

Now you can enter commands in the game. Open the console in the game by pressing the ~/~ button.