I agree with everyone else who has said that if she is showing signs, then go for it. I work with toddlers at a child development center and we give parents a "Potty Packet" with lots of information. There is a toilet learning readiness page where parents can check off all the readiness signs their child is showing. There are a lot, but some of them include being able to tell you when they have gone or need to go, disliking or noticing a dirty/wet diaper, being able to pull pants up and down (or at least start to try), and show interest in sitting on the potty. It sounds like she is showing several of these signs. That's good!
As far as a method, many parents talk about a 3 day method, or other specific ways to potty train a child. I have seen so many toddlers learn to use the potty at school just by sitting on the potty several times during the day and sometimes they go, and sometimes they don't. Asking them often if they need to go can also help. We don't use rewards, stickers, or candy. This is a normal bodily function that everyone does and I don't think rewards have anything to do with it. If you want to praise her, just tell her how proud you are of her that she is learning how to go on the potty.
We have to remember that potty training really is a learning process--it is a new skill they are acquiring and we can't expect them to do it within a certain amount of time or get it right the first few times. You will have to teach her what to do at each step. It will take practice and expect her to have accidents--even after you think she is totally potty trained. Remember not to make her feel guilty or ashamed for having accidents. Just help her get cleaned up and remind her what to do when she has to go.
Good Luck!
C.