Step 1: Plan on what you need.
Step 2: Small Parts
Step 3: The Safety Aspect
Or.. well... somewhere up there in the list of priorities.
Gloves and eye protection are a must. You can buy some quality gloves for $10, but you can't buy fingers. Second to our hands, our eyes are the most sensitive part of our bodies. If iron dust from a grinder gets on your cornea, it will be a world of pain. Just trust me. Like I said before, your needs can vary. If you are a solderer, buy a CPU fan to keep out fumes, If you weld, professional welding gloves will help.
Fire is also a big risk to any pyromaniac, **Cough**Tetranitrate**Cough**, so at least one extinguisher is paramount.