Formal:
* Directions
* Guidelines
* Manual
* Procedure
* Protocol
* Regulations
* Specifications
* Rules
* Policy
Informal:
* Steps
* Tips
* Advice
* Guidance
* How-to
* Recipe (for a specific task)
* Guide
Other:
* Command (if they are direct and authoritative)
* Order (if they are mandatory)
* Explanation (if they focus on understanding)
* Demonstration (if they are shown visually)
The best word to use will depend on the specific situation.