You can reset your skills at any time by using the Rededication Shrine for a little gold in The Elder Scrolls Online. It will cost you 50 gold per skill point that you have assigned.
For the first time, I reset my skills in Elden Root. I'm going to show you the location of the Rededication Shrine in Elden Root.
First find the Grahtwood on the map.
Go to Elden Root in the Grahtwood.
You can find Rededication Shrine on the map where I marked it in red.
You can reset the skills by clicking the Skills: Make a donation. You can also reset your Attribute Points there.
Other Rededication Shrines are located in Mournhold in Deshaan and Wayrest in Stormhaven.