The wood in my house is an ugly yellow-orange-ish color. I want to strip it and stain it with a nice color.

I wish I could tell you what kind of wood it is or what kind of finish is currently on it but I have no idea. All I know is that it is an ugly yellow-orange. As far as I know it isn't even a stain, it could be the natrual wood color. I didn't know wood could be this ugly though.

Can someone tell me what the pros/cons are of sanding it versus using a checmical stripper?

Or how can I tell if this is a stain versus the natural color? It doesn't look like there is anything on it. If it is the natural color, what should I do to darken it up.

Sorry about all these amateur questions but I am an ameteur.