Can I respec my skills? If so, where do I respec my skills?

You have to respec your skills and attribute points separately. Each skill point spent and each attribute point spent costs 100 gold each. So if you're level 25 you have 24 attribute points that you have spent and that would cost you 2,400 gold. You get quite a few extra skill points from sky shards, quests and dungeons, so I can't really estimate what it would cost you to respec your skills.

As far as where you respec your skills, there are respec shrines located in the main city of the second area in each alliance. Since you're level 25, you should be in or just leaving the correct area. Here's the locations for each since you haven't specified which alliance you're in. If you're on a different character and aren't high enough level to get to the rededication shrine, you can invite a guildy/friend/random person to your group, have them travel there, then press 'P', right click on their name and then click 'Travel To Player'. You could respec at level 5 if you wanted to!

Aldmeri Dominion

You can respec your skills and attribute points in Elden Root, Grahtwood (the big city in the 2nd main area).

Ebonheart Pact

You can respec your skills and attribute points in Mournhold, Deshaan (the big city in the 2nd main area).

Daggerfall Covenant

You can respec your skills and attribute points in Wayrest, Stormhaven (the big city in the 2nd main area).