If you want to become an actor with no experience, the first thing you should do is actually get some experience. Find an acting class, or look into professional classes if you’re really serious. While it is absolutely possible to get a little work as a novice, you also have nothing to gain by remaining inexperienced.
Can I wear jeans to an audition?
You don’t need to dress like you’re going in for a corporate interview here. Your clothes shouldn’t be a wrinkled mess, but you also shouldn’t be wearing business attire to an audition. A good pair of jeans can go a long way, and it’s worth investing in a pair for auditions alone.