Here's the checklist and a video explaining the basics.
Checklist
A good project brief talks about these core 4 elements
1. Your pitch
- What you do
- What you sell
- Current situation & goals
2. Your assets
- List of existing and new assets
- Written content
- Design guidelines
3. Your tools
- List of your tools
- Requirements
- Test plan
4. Project Phases
For each phase:
- The type of person & the work
- Time frame
- Budget & ROI