If your ceiling tests positive, you have a couple options: You can hire a professional to safely remove the ceiling or you can cover it up with wood paneling or drywall—if the ceiling is intact, it’s perfectly safe to leave it as-is and simply cover up the texture you don’t want to see.
If your ceiling doesn’t test positive for asbestos and you want to handle removing it yourself, the tools you’ll need are likely already in your garage: a ladder, a putty knife, a garden sprayer, and lots of plastic sheets and drop cloths to protect the rest of your room from the mess you’re surely about to make.