Before you begin a refinishing project, learn how to remove stain from wood. Even new DIYers can do this easy home ...

Wood Stain Ratings Enhance the beauty of decks, fences, and outdoor furniture with the best wood stain. A quality wood stain adds a premium finish that lasts for years.

But the wood is heavily stained. I think the paneling is original ... but you could use a circular saw to cut vertical grooves to resemble the paneling in your den. Use a fine-tooth plywood ...