I have used Goof Off, which is used to remove ink, paint, gum, just about anything. Test it in one spot. If the camo is an add-on it will come off with one of these products. If it is factory, there may not be a finish underneath. If you choose to spray a finish, Tru Oil, or Daley's Profin Oil can be used, or good ol marine varnish. Check product labeling to see if it is UV rated. When working with wood sand only with the grain, regardless of what you use. Start with 220, work up to 600. I will finish with 600 garnet, wet, but not much moisture. Bare wood will absorb moisture. If he bare wood has pits, you can finish & sand until filled. Be aware of the humidity when sealing. Remove dust with a d.alcohol as suggested, or a tac cloth. Do your finish work in a dust free room, by misting the air with a spray bottle of water. Use a wire to hang the bow from the nock while applying finish or drying, unless you have a drying room. Glossy finish are nice, but hard to keep the dust out. Good luck. As a resource, check
www.tradarchersworld.com formerly The Bowyers Journal. They are selling Jack B. Harrison's book along with a subscription. Title is "Traditional Bowyer, More Unnecessary Fun" It is a great book. You might find it on-line at
www.alibris.com or Amazon.com Good luck.