Skill Tag (Fallout) Free:
Just three skills to Tag, and you'll get an immediate boost to your competence in them. Not enough to be an expert, mind. Just enough to go from novice to decent, or decent to downright competent. You'll also learn that skill faster too, so with enough practice, you really will get perfect. Most also come with tools of the trade, just to make your life easier.
Medicine: Putting people back together – includes first aid and surgery, as well as treating diseases, radiation poisoning, and other conditions. Start with a first aid kit.
Repair: Practical use of science – building things, fixing them when they break. Start with a toolkit.
Science: Various high technical skills, including computers, biology, physics, and geology. Start with a nifty lab coat and gloves.