You can change your skills easily, if you feel that they aren't working.
My real tips for a beginner would be, as the above person said, "leave the Hinterlands", which is a beginning area full of optional quests that you can come back to later. I'd suggest following the main quest intently at least until you get to a place called Skyhold (in the game it'll be obvious when you've reached that point) before tackling more optional stuff, because a LOT of things open up with Skyhold.
Edit: And take a good look at your character under different lights as you go through the introduction/prologue of the game. I disliked the way my character looked after creation but decided to just keep going, which was a big mistake; it's far better to start over after 30 minutes and go back to make a better face than to finish the game with an ugly one (or worse, remake your character after putting in a bunch of hours of play).