Half Marathon Training Plan

Create a half marathon training plan for me.

My details:
- Running experience: [beginner, intermediate, experienced]
- Current weekly mileage: [miles]
- Longest recent run: [miles]
- Recent race times: [any recent results]
- Race date: [date]
- Goal: [finish, specific time, PR]
- Days available: [days per week]
- Time constraints: [any limitations]

Please include:
1. Week-by-week training schedule
2. Long run progression
3. Speed/tempo work schedule
4. Easy run guidelines
5. Cross-training recommendations
6. Taper period
7. Race pace guidance
8. What to do if training goes off track