I recently purchased some new furniture for DS1's bedroom. It was pretty cheap and is untreated pine. It feels slightly rough to the touch. We have a bedside table, wardrobe and chest of drawers. I'd really like to protect the surfaces at the bare minimum of the table and drawers - possible DS will have water bottles etc. on and he is 3 so not careful. I mainly want to avoid water marks, stains and be able to clean it. At the moment it feels like if I were to polish with a duster and polish it would snag. What can I use? I've never treated any kind of furniture before so I really am clueless. Would it stain the colour of the wood? Is sanding beforehand inevitable?
Thanks 