1. Wear a helmet.
2. Drivers tend to not see bikers.
3. Bald tires ≠ Racing Slicks
4. You're not a pro, same bike as a pro ≠ same skill as a pro
5. Gloves are second most important piece of gear.
6. Rain gear isn't for just for pussies
7. Have secondary mode of transportation.
8. Wire routing is important, do it correctly.
9. Sometimes a bigger breaker bar isn't needed. Try lube, heat, etc..
10. Have a good set of tools. Hex/Allen keys are usually the most needed.